Mailman 3 November 2000 - Python-announce-list

Python/JPython Job Opportunities in Dallas, TX
by Paul Cain 20 Nov '00

20 Nov '00

Programmer/Analyst (Python/JPython) - Dallas, TX Job Description: - Translate Business Specifications into Python/JPython scripts. - Interact with Business Analysts, Systems Analysts, and Quality Assurance to understand business/functional requirements. - Interact with Java Developers to implement and test scripts. - Create and design test cases and plans. Minimum Required Skills: - 1+ year Python and/or JPython - Basic data modeling knowledge/experience - Good design skills - Ability to manage time and meet schedule commitments - Initiative - High attention to detail with documentation, design, coding, and maintaining standards - Excellent written and verbal communications skills for interaction with other groups - Desire to learn - Great attitude and personality Desired Skills: - Documenting Business Process Flows - Creating Functional Specifications - Developing Test Cases ExoLink Corporation is an e-business broker / transaction clearinghouse. We are located at I-35 and Corporate Drive in Lewisville, TX. We provide e-commerce services for companies engaged in the de-regulated retail energy industry. This is accomplished through the creation of a virtual marketplace via our ExoTran application. This cutting edge Java based system allows for the fast and most efficient flow of all forms of data across all platforms. We utilize technologies such as Java, CORBA, Oracle v8i RDBMS, Windows NT v4.0, UNIX (Sun Solaris) and more. ExoLink Corporation is a small, rapidly growing company. We currently have 70+ employees and have open positions for an additional 20-30 employees. Our rapid growth rate is due to new clients and projects resulting from both direct and strategic marketing partners. The company has an objective to go public by 2002. ExoLink has a fun and fast paced environment. Our dress is business casual. We have great benefits and offer PRE-IPO STOCK OPTIONS. - 3 Positions Available - Start Date: ASAP - SALARY: Open (dependent upon skill set, skill level, and experience) + Pre-IPO Stock Options + Benefits - Benefits: Health Insurance (Company pays employee's: monthly medical premiums, monthly dental premiums, long term disability, life insurance), 18 Paid Time Off (PTO) days/year (covers vacation, illness, personal time, etc.) + 10 holidays, 401(k), Pre-IPO Stock Options - Travel: NO TRAVEL - Location: Dallas, TX (Lewisville) For more information about ExoLink, please visit us at www.exolink.com Paul Cain ExoLink Corporation (972) 538-6977 (972) 538-6850 fax paul.cain(a)exolink.com www.exolink.com

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Dr. Dobb's Python-URL! - weekly Python news and links (Nov 20)
by Grant Edwards 20 Nov '00

20 Nov '00

Kind of a slow week -- maybe everybody is paying too much attention to Florida. Keep watching comp.lan.python.announce, though. Steve Holden points out the "dtuple" package for turning tuples/lists into objects or dictionaries with named attributes. http://deja.com/=dnc/getdoc.xp?AN=691663734 Bernhard Reiter publishes wxPython article (German) in magzine "sw-development". http://deja.com/=dnc/getdoc.xp?AN=694747967 Andrew Dalke politely explains the convention of a "main" function and associated textual formatting http://deja.com/=dnc/getdoc.xp?AN=695235053 Alex Martelli writes wisely and comprehensively. This time his subject is run-time type calculation http://deja.com/=dnc/getdoc.xp?AN=695348220 While thinking about list comprehensions, he ventures perilously near the land of over-refined arcana, before emerging with a lovely example of correct and meaningful usage http://deja.com/=dnc/getdoc.xp?AN=695705631 jepler epler correctly promotes os.path as a superior alternative to RE-slinging http://deja.com/=dnc/getdoc.xp?AN=695477505 A loooong thread on "Ruby and Python" includes highlights which not only sagely contrast those two, but also examine several interesting tangents http://deja.com/=dnc/viewthread.xp?AN=694317151 ======================================================================== Everything you want is probably one or two clicks away in these pages: Python.org's Python Language Website is the traditional center of Pythonia http://www.python.org although PythonLabs.com bills itself as "The Python Source", which is becoming increasingly true in 2000 http://www.pythonlabs.com/ PythonWare complements the digest you're reading with the daily python url http://www.pythonware.com/daily comp.lang.python.announce announces new Python software. Be sure to scan this newly-revitalized newsgroup at least weekly. http://deja.com/group/comp.lang.python.announce Andrew Kuchling writes marvelous summaries twice a month of the action on the python-dev mailing list, where the future of Python is truly determined http://www.kuchling.com/python/dev/ The Vaults of Parnassus ambitiously collects Python resources http://www.vex.net/~x/parnassus/ Much of Python's real work takes place on Special-Interest Group mailing lists http://www.python.org/sigs/ Python Consortium emerges as an independent nexus of activity http://www.python.org/consortium Cetus does much of the same http://www.cetus-links.de/oo_python.html Python FAQTS http://python.faqts.com/ Python To-Do List anticipates some of Python's future direction http://www.python.org/cgi-bin/todo.py Python Journal is at work on its second issue http://www.pythonjournal.com Links2Go is a new semi-automated link collection; it's impressive what AI can generate http://www.links2go.com/search?search=python Archive probing trick of the trade: http://www.dejanews.com/dnquery.xp?QRY=&DBS=2&ST=PS&defaultOp=AND&LNG=ALL&f… Previous - (U)se the (R)esource, (L)uke! - messages are listed here: http://purl.org/thecliff/python/url.html or http://www.dejanews.com/dnquery.xp?QRY=~g%20comp.lang.python%20Python-URL%21 Suggestions/corrections for next week's posting are always welcome. [http://www.egroups.com/list/python-url-leads/ is hibernating. Just e-mail us ideas directly.] To receive a new issue of this posting in e-mail each Monday morning, ask <claird(a)neosoft.com> to subscribe. Mention "Python-URL!". -- The Python-URL! Team-- Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and sponsor the "Python-URL!" project. -- Cameron Laird <claird(a)NeoSoft.com> Business: http://www.Phaseit.net Personal: http://starbase.neosoft.com/~claird/home.html

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JPE - Java Python Extension Project
by Frederic Giacometti 19 Nov '00

19 Nov '00

Hello, I am just dropping a note to announce the alpha release of the first implementation of a full-fledged Java-Python integration: JPE. In contrast to JPython, this implementation relies on "C" Python and Java 2.0 SDK 1.2's JNI C API. In other terms, JPE maintains a Java and a Python virtual machines running in the same process space (while JPython entirely runs within the Java virtual machine). Java and Python threads are associated together at the OS thread level. For many other question: http://www/arakne.com/jpe. The source (Mozilla open source license) is available on sourceforge at http://sourceforge.net/projects/jpe. Ciao, Frederic Giacometti frederic.giacometti(a)arakne.com

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[ANN] MoinMoin Release 0.5
by J�rgen Hermann 17 Nov '00

17 Nov '00

A WikiWikiWeb is a collaborative hypertext environment, with an emphasis on easy access to and modification of information. MoinMoin is a Python WikiClone that allows you to easily set up your own wiki, only requiring a Web server and a Python installation. This release features graphical smileys, processing instructions (page redirection, multiple input formats, comments), a RandomPage macro, configurable HTML page footers, and the usual set of bugfixes. The code is now refactored to modules, and as expected a lot easier to extend and maintain. While some of the new features are not fully finished, some quite useful ones are (see the list below), and the active code base has reached some maturity. As a consequence of the multi-module implementation, starting with this release you need to have the "MoinMoin" directory in your python path, since "moin.cgi" is now only a small driver to a package named "MoinMoin" (said directory). See "INSTALL" for more information. As a compensation for the slightly more complex setup, there is now a "test.cgi" script to check your installation. For multi-wiki setups, the new scheme is actually easier (only one directory you need to update). Homepage: http://moin.sourceforge.net/ Download: http://download.sourceforge.net/moin/ Mailing lists: http://lists.dragon-ware.com/mailman/listinfo/moin-users http://lists.dragon-ware.com/mailman/listinfo/moin-dev New features: * Major refactoring: code is now broken up into modules within the "MoinMoin" package * Diagnosis of installation via a "test.cgi" script * Smileys * "#format" processing instruction * "##comment" * [[RandomPage]] and [[RandomPage(number)]] macro * configurable footer ("page_footer1" and "page_footer2") * "#redirect" processing instruction Bugfixes: * Bugfix for broken CGI environment of IIS/4.0 * URLs and InterWiki links are now less greedy (punctuation at the end is excluded, and "<" ends them, too)

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ANN: DOOP (Distributed Pythontic MOO) 0.1.1
by John Wiegley 16 Nov '00

16 Nov '00

DOOP is a distributed, object-oriented MOO server written in Python. It began with the POO source of last year, but has diverged greatly from it. This version is GPL, with the kind permission of the original POO author, Joseph Strout. The server is in pre-alpha stage at the moment, though most of the functionality is working just fine. I still have to hammer out some of the scripts, and test the remoting/multi-threaded code under heavy load. You can try out a one-user version of the server at: http://doop.sourceforge.net Just run the script "bootstrap", followed by "run". Note that you will need Pyro 1.4 to use DOOP, with the modifications below. Suggestions are welcome! John Wiegley <johnw(a)gnu.org> ---------------------------------------------------------------------- --- Pyro-1_4/Pyro/__init__.py Mon Aug 7 14:07:51 2000 +++ pyro/Pyro/__init__.py Thu Nov 16 10:19:52 2000 @@ -27,13 +27,15 @@ PYRO_VERSION = '1.4' -import configuration, os +import configuration, os, os.path config = configuration.Config() try: confFile = os.environ['PYRO_CONFIG_FILE'] except KeyError: confFile = '' +if not confFile and os.path.isfile("Pyro.conf"): + confFile = "Pyro.conf" config.setup(confFile) --- Pyro-1_4/Pyro/core.py Sun Oct 15 06:01:36 2000 +++ pyro/Pyro/core.py Thu Nov 16 10:21:23 2000 @@ -60,7 +60,7 @@ if flags & RIF_Varargs: # reconstruct the varargs from a tuple like (a,b,(va1,va2,va3...)) args=args[:-1]+args[-1] - if method in ('remote_hasattr', 'remote_getattr', 'remote_setattr'): + if method in dir(ObjBase): return apply(getattr(self,method),args,keywords) else: return apply(getattr(self.delegate,method),args,keywords) @@ -187,11 +187,6 @@ def __str__(self): return repr(self) - # Note that a slightly faster way of calling is this: - # instead of proxy.method(args...) use proxy('method',args...) - def __call__(self, method, *vargs, **kargs): - self._name.append(method) - return self.__invokePYRO__ def __invokePYRO__(self, *vargs, **kargs): if self.adapter is None: # delayed adapter binding. .

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ANN: New URL for the mx-Extensions (mxDateTime,mxODBC,etc)
by M.-A. Lemburg 16 Nov '00

16 Nov '00

[I'm resending this, because the note I sent yesterday didn't seem to have made it to the newsgroups.] Hi everybody, due to the frequent downtimes of Starship.python.net I am moving all my Python Pages including the mx Extensions to a new site which will hopefully provide a more stable platform. Python Pages URL ---------------- You can find everything at this new URL: http://www.lemburg.com/python/ Please update your links to this new URL. Once I get my login for starship to work again, I'll also post an announcement there. mx Extensions URL ------------------ The mx Extensions (e.g. mxDateTime, mxODBC, mxTextTools, etc.) can be downloaded in versions for Python 1.5.2 and Python 2.0 from: http://www.lemburg.com/python/mxExtensions.html Sorry for the delays and mixups during the last few days, -- Marc-Andre Lemburg ______________________________________________________________________ Company: http://www.egenix.com/ Consulting: http://www.lemburg.com/ Python Pages: http://www.lemburg.com/python/

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python-dev summary, Nov 1-15
by A.M. Kuchling 15 Nov '00

15 Nov '00

Python-dev summary, November 1-15, 2000 ======================================= To comment on material in this python-dev summary, you can simply post to comp.lang.python / <python-list(a)python.org>. These summaries are archived at <URL:http://www.amk.ca/python/dev/>. The move to Digital Creations has broken the dam, burying python-dev in a flood of new ideas. This two week period was very busy, beginning with a call for feature proposals for Python 2.1. This summary will therefore be more telegraphic than usual; it would be too time-consuming to summarize the major threads, which were all quite lengthy, and the final result would still distort the arguments. So, if one of the topics is of interest to you, please refer to the python-dev archives for all the details. Python 2.1 tasks ================ GvR listed the PEPs he wants to consider for Python 2.1, and requested more input: "If you have an idea for a PEP that you think should be implemented in Python 2.1, or if you want to revive a PEP that's currently listed in one of the "unattainable" categories, now's the time to make a plea!" http://www.python.org/pipermail/python-dev/2000-November/017072.html Various people followed up stating what they'd like to work on: Moshe Zadka wants to tackle the question of integer division (see below), AMK wants to use the Distutils to build Python itself, and so forth. Discussion of most of the topics covered in this summary was triggered by this call for suggestions. After being closely focused on the release of Python 2.0 for so long, python-dev is beginning to direct its gaze toward the distant horizon of the future. Integer division ================ Moshe drafted PEP 228, "Reworking Python's Numeric Model". This PEP proposes a numeric model for Python that isn't based on C's model, which ultimately derives from machine representations of integers and floats. "While coercion rules will remain for add-on types and classes, the built in type system will have exactly one Python type -- a number." http://python.sourceforge.net/peps/pep-0228.html The ensuing discussion was scattered, mostly revolving around whether and when to use rational numbers, and whether floating point literals should be considered exact or inexact numbers. It's not obvious that this PEP can be solidified in time for its results to be incorporated in Python 2.1. Stackless Python, and microthreads ================================== Some sort of resolution to Stackless Python seems likely for 2.1. Guido is inclined to take a solution for 90% of the problems: "I still think that the current Stackless implementation is too complex, and that continuations aren't worth the insanity they seem to require (or cause :-), but that microthreads and coroutines *are* worth having and that something not completely unlike Stackless will be one day the way to get there..." He then went on to post a strawman API for microthreads: http://www.python.org/pipermail/python-dev/2000-November/017216.html Christian Tismer agreed with him that continuations aren't really necessary. "I'm happy to toss continuations for core Python, if we can find the right building blocks for coro/gen/uthreads. I think Guido comes quite near this, already." http://www.python.org/pipermail/python-dev/2000-November/017252.html And so did Tim: "I don't know of any comprehensible application of continuations that can't be done without them." http://www.python.org/pipermail/python-dev/2000-November/017258.html Christian Tismer enumerated the changes to ceval.c made by Stackless: http://www.python.org/pipermail/python-dev/2000-November/017238.html Finally, Gordon McMillan put up a Stackless intro and tutorial: http://www.mcmillan-inc.com/stackless.html Class/type dichotomy ==================== The seam that runs between classes, defined in Python code, and types, defined in C code, has been in Python from the beginning. Various schemes for bridging the gap were suggested. M.A. Lemburg suggested adding an extra indirection, letting C types identify themselves as subclasses of another C type: http://www.python.org/pipermail/python-dev/2000-November/017152.html Greg Ewing, inspired by Ruby's implementation, suggested adding a global dictionary to add extra attributes to type instances: http://www.python.org/pipermail/python-dev/2000-November/017196.html Scoping changes =============== Python's two-level scoping rules have been the subject of debate for a while. Many new users expect Python to have Pascal-like static scoping and are surprised when variable references in lambdas or other nested functions behave unexpectedly. Previously this would have presented technical problems, since nesting scopes would create cyclical references, which couldn't be handled by Python's reference counting. Jeremy wrote PEP 227, "Statically Nested Scopes", to make a concrete proposal: "The current language definition defines exactly three namespaces that are used to resolve names -- the local, global, and built-in namespaces. The addition of nested scopes would allow resolution of unbound local names in enclosing functions' namespaces." http://python.sourceforge.net/peps/pep-0227.html Some discussion ensued, mostly about whether it's worth changing this just to fix nested functions. A side thread on dynamic scoping, as opposed to static, spun off at one point, but since practically everyone thought it was a bad idea, nothing emerged from it worth summarizing. Other matters ============= Another item on GvR's list for 2.1 was a framework for printing optional warnings: http://www.python.org/pipermail/python-dev/2000-November/017134.html Coincidentally, Paul Prescod was also working on a warning framework, and had a draft PEP: http://www.python.org/pipermail/python-dev/2000-November/017144.html AMK tried to raise some interest in PEP 222, which lists some improvements to make Web programming in Python easier, but there seems to be little interest. If no further interest is shown by the community, the PEP will simply be abandoned. http://python.sourceforge.net/peps/pep-0222.html A Web page listing critical patches for 2.0 was created: http://www.python.org/cgi-bin/moinmoin Related Links ============= Python-dev archives: http://www.python.org/pipermail/python-dev/ Python project page on SourceForge: http://sourceforge.net/projects/python Python Enhancement Proposals (PEPs): http://python.sourceforge.net/peps/

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ANN: 4Suite 0.9.2
by uche.ogbuji＠fourthought.com 15 Nov '00

15 Nov '00

ANN: 4Suite 0.9.2 Fourthought, Inc. (http://Fourthought.com) announces the release of 4Suite 0.9.2 --------------------------- Open source tools for standards-based XML, DOM, XPath, XSLT, RDF XPointer, XLink and object-database development in Python 4Suite is a collection of Python tools for XML processing and object database management. An integrated packaging of several formerly separately-distributed components: 4DOM, 4XPath and 4XSLT, 4RDF, 4ODS 4XPointer and featuring the new 4XLink and DbDOM. News ---- - The 4Suite home page has been moved to http://4Suite.org - 4Suite has moved to a derivative of the Apache license. - 4Suite now workd with Python 2.0 as well as Python 1.5.2. Python 1.6 is not supported, although it might work. Python 1.5.2 support is expected to be dropped in the next release of 4Suite. - PyXML 0.6.2 is still required even if you are using Python 2.0 http://sourceforge.net/projects/pyxml - Changes to the software: * Introduced 4XLink: A processor to expand XLink attributes * Introduced DbDom: An alpha Dom implmentaiton on top of 4ODS * ODS: Improved the test suites to handle more cases and conform to protocol * cDomlette: added support for methods * 4RDF: Fixes and improvements to serialization, the back end and the API * All: Many improvements to the docs * All: Standardized reader interfaces across DOM implementations * All: Test with python 2.0 * All: PyXML not needed with Python 2.0 * Many misc optimizations * Many misc bug-fixes - We have set up a contest for stories of 4Suite usage. See http://www.4suite.org/contest.epy More info and Obtaining 4Suite ------------------------------ Please see http://4Suite.org >From where you can download source, Windows and Linux binaries. 4Suite is distributed under a license similar to that of the Apache Web Server. -- Uche Ogbuji Principal Consultant uche.ogbuji(a)fourthought.com +01 303 583 9900 x 101 Fourthought, Inc. http://Fourthought.com 4735 East Walnut St, Ste. C, Boulder, CO 80301-2537, USA Software-engineering, knowledge-management, XML, CORBA, Linux, Python

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Sybase module 0.9 released
by Dave Cole 15 Nov '00

15 Nov '00

What is it: The Sybase module provides a Python interface to the Sybase relational database system. The Sybase package supports almost all of the Python Database API, version 2.0 with extensions. The module works with Python versions 1.5.2 and later and Sybase versions 11.0.3 and later. It is based on the Sybase Client Library (ct_* API), and the Bulk-Library Client (blk_* API) interfaces. Changes: - A Numeric object exposes the Sybase numeric / decimal data type to Python. Columns of type numeric / decimal will be returned as Numeric objects. Numeric objects can be used in almost all places as other Python number objects. The following operations have been implemented; +, -, *, /, int(), float(), long(), str(), cmp(), repr(), hash(), abs(). A Numeric object has two readonly attributes; precision, and scale. You can create a new Numeric object by using the Sybase.numeric(value) function. This will convert the int / long / float / string object passed as value to Numeric. At the moment, money and money4 types are still transformed into float objects because I have not worked out how to tell the Sybase library to generate the right number of decimal places in arithmetic results. For example: You can pickle the new numeric data type. >>> import Sybase >>> n = Sybase.numeric(100200300400500L) >>> n.precision, n.scale (77, 0) >>> m = Sybase.numeric(n, 30, 2) >>> m 100200300400500.00 >>> m.precision, m.scale (30, 2) If you want to increase the scale without modifying the precision, pass -1 as the precision. >>> m = Sybase.numeric(n, -1, 4) >>> m 100200300400500.0000 >>> m.precision, m.scale (77, 4) Where can you get it: http://www.object-craft.com.au/projects/sybase/ - Dave -- http://www.object-craft.com.au

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ANNOUNCE: The Snack Sound Toolkit v2.0.3
by Kare Sjolander 14 Nov '00

14 Nov '00

This release contains: * Many bug-fixes * Updated documentation * Updated demos that reflect new Snack features * Expanded test suite * Improved Windows installers The Snack Sound Toolkit is designed to be used with a scripting language. Snack adds commands to play, record, and process sound and supports in-memory sound objects, file based audio, and streaming audio. It handles fileformats such as WAV, MP3, AU, AIFF, and NIST/Sphere. Snack is extensible, new commands, filters, and sound file formats can be added using the Snack C-library. An easy to build example extension is contained in the source distribution. Snack also does sound visualization, e.g. waveforms and spectrograms. The visualization objects update in real-time and can output postscript. Snack works with Tcl8.0 - Tcl8.4 and Python 1.5.2-2.0 Platforms: Linux, Solaris, HP-UX, IRIX, NetBSD, Macintosh, and Windows95/98/NT/2K. Source and binaries can be downloaded from http://www.speech.kth.se/snack/ Regards, Kare Sjolander kare(a)speech.kth.se

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