Python-announce-list January 2003

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56 participants
69 discussions

[ANNOUNCE] Third release of PythonCAD now available
by Art Haas 31 Jan '03

31 Jan '03

I'd like to announce the third release of PythonCAD, a CAD package for open-source software users. As the name implies, PythonCAD is written entirely in Python. The goal of this project is to create a fully scriptable drafting program that will match and eventually exceed features found in commercial CAD software. PythonCAD is released under the GNU Public License (GPL). PythonCAD requires Python 2.2. The interface is GTK 2.0 based, and uses the PyGTK module for interfacing to GTK. The design of PythonCAD is built around the idea of separating the interface from the back end as much as possible. By doing this, it is hoped that both GNOME and KDE interfaces can be added to PythonCAD through usage of the appropriate Python module. Addition of other interfaces will depend on the availability of a Python module for that particular interface and developer interest and action. The third release adds some new functionality to the program. Construction lines can be easily drawn tangent to circles and arcs, as well as drawn perpendicular to the various entities in a drawing. The thickness of drawing entities like line segments and circles is now drawn on the screen, too. Splitting the entities in the drawing can now be done by clicking on them at the point where they are to be split, or entities can be split at points where they intersect one another. This splitting functionality works only for "real" entities in a drawing like segments and circles; there is no splitting of the construction objects. This release also includes many internal improvements in the code. Many routines were revised to conform to current code standards, numerous routines were simplified, and some routines were completely re-written. These cleanups fixed various bugs, as well as making the code easier to understand in places. Visit the PythonCAD web site for more information about what PythonCAD does and aims to be. http://www.pythoncad.org Come and join me in developing PythonCAD into a world class drafting program! Art Haas -- They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. -- Benjamin Franklin, Historical Review of Pennsylvania, 1759

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ANN: Pyacc 0.1 -- Python Yacc Parser
by Brian Sabbey 31 Jan '03

31 Jan '03

Pyacc is a Python interface/extension to the Berkeley Yacc parser generator. Pyacc reads a grammar, specified with Python documentation strings (similar to SPARK and PLY), and uses Yacc to produce the LALR(1) parsing tables. Unlike Yacc, Pyacc does not generate C code for a parser. Instead, the parser is built into the Pyacc Python module, and no C compilation is required to create a parser for a new grammar. I created Pyacc because I wanted a Python parser that: * can efficiently parse LALR(1) grammars. * allows strings and regular expressions to be embedded directly into the grammar rules. * uses function documentation strings to specify grammar rules. * is (I imagine) very fast, since most of it is just yacc. * does not produce code that needs to be run or compiled. A simple example: from pyacc import Parser def add(t): 'exp : exp "+" exp' # literals are put directly into grammar rules return t[0] + t[2] def number(t): r'exp : re"\d+" ' # regular expressions are preceded by 're' return int(t[0]) print Parser().parse("2+3+4") ==> 9 Pyacc can be obtained from <a href="http://staff.washington.edu/sabbey/pyacc">http://staff.washington.edu/sabbey/pyacc</a>

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[ANN] custom 0.6 released
by Luke Kenneth Casson Leighton 30 Jan '03

30 Jan '03

Custom 0.6 ------ custom is an e-commerce solution for small to medium-sized businesses that provides: - a customisable web front-end for customers and Point-of-Sale staff to place orders - for warehouse staff to manage stock - for accountants and sales staff to manage and generate invoices - for purchasing managers to keep track of suppliers and competitive pricing. Download -------- http://sf.net/projects/custom [The rest of the README.txt can be found in the top-level directory, it's getting a bit long i'd rather keep it short on this list so you don't get bored! ] Changes since last announcement: - use of the python-htmltmpl package to split out site HTML format from the content (very good system, htmltmpl). - the move to frame-based pages caused a bit of chaos: very nice but causes havoc with the fifty or so HTML links all needing their own target frames to be specified ... - new feature: Product Codes from suppliers can now also be stored on a per-product basis. WARNING: if updating from pre-0.5 to 0.6, you MUST make a backup of your MySQL database and then run the db/update1.sql script which will reformat your products into the new table format. l.

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ANN: rlcompleter2 0.95 Interactive Completion
by holger krekel 29 Jan '03

29 Jan '03

rlcompleter2-0.95 Python readline aka <tab> completion ------------------------------------------------------- There are some small bugfixes and enhancements with the 0.95 version. Moreover, i rearranged/extended the website, added an issue tracker (roundup) for bugs and feature wishes and a development mailistlist. Please find it all here: http://codespeak.net/rlcompleter2/ I don't quite expect much traffic on the mailing list but it might be a good place to discuss further runtime introspection developments. One of my ideas is to make the completer 'embeddable' into an application. A frontend could then connect to a running application and you could live-inspect your system (with tab-completion). Apart from a terminal frontend a web based app could provide navigation and browsing through live objects (including their documentation). Anybody interested in stuff like this is invited to join the mailing list. thanks for your attention, holger

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[Announce] IDLEfork 0.9a2 Release
by kbk＠shore.net 29 Jan '03

29 Jan '03

The IDLEfork 0.9 Alpha 2 release is now available for download at: http://sourceforge.net/projects/idlefork/ The distribution is available as a Windows Installer, as a Python2 RPM, and in source form as a .tar.gz. Please read the release notes (which include installation instructions) at Sourceforge for additional details. 0.9 Alpha 2 Highlights ====================== The shell is now annotated to indicate a restart, and can be restarted from the Shell window. There is a new Shell menu. Expanded Additional Help feature: Can now use a web URL and browse for local help files. Help sources have been moved to the main Help menu. Exceptions under debugger control now show the correct traceback. Fixed class and path browsers to work with Python 2.3. Multiple bug fixes and usability enhancements, see the Changes section of the SF release docs. IDLEfork ======== IDLEfork is an official experimental branch of Python's Integrated DeveLopment Environment, IDLE. The biggest change in IDLEfork is to execute Python code in a separate process, which is /restarted/ for each Run (F5) initiated from an editor window. This enhancement of IDLE has often been requested, and is now finally available. The magic "reload/import *" incantations are no longer required when editing/testing a module two or three steps down the import chain. The IDLE Debugger has been extended to support the new design, and its operation will be familiar to those who have used it previously. The breakpoint feature has been enhanced, and breakpoints are now persistent across IDLE sessions. When a module is open in an Edit window, its breakpoints are active. There is also a new GUI configuration manager which makes it easy to select fonts, colors, keybindings, and startup options. IDLEfork will be merged back into the Python distribution in the near future (probably at 2.3), replacing the current version of IDLE. For this reason we are interested in getting as much testing time as possible before the merge. As David Scherer aptly put it in the original IDLEfork README, "It is alpha software and might be unstable. If it breaks, you get to keep both pieces." If you find bugs let us know about them by using the IDLEfork Bug Tracker. See the IDLEfork home page at http://idlefork.sourceforge.net for details. Patches are always appreciated at the IDLEfork Patch Tracker, and Change Requests at the RFE Tracker at https://sourceforge.net/tracker/?group_id=9579&atid=359579 Thanks for trying IDLEfork.

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ANN: Twisted 1.0.2, the framework of your Internet
by Itamar Shtull-Trauring 29 Jan '03

29 Jan '03

Twisted is an event-driven networking framework for server and client applications. More detailed information can be found after the "What's New" section. For more information, visit http://www.twistedmatrix.com, join the list http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python or visit us on #twisted at irc.freenode.net. What's New in 1.0.2 =================== - Serial port support. - GPS (global positioning system), supporting NMEA 0183 and Rockwell Zodiac devices. - GTK2 event loop. - Improved event scheduling support. - Many new examples, including an example of Cocoa (Mac OS X) integration. - Fancy Win32 installer, with Start menu integration. - Large number of improvements to the SSH server. In addition, Twisted now ships with a command-line ssh client (conch), with same options as openssh client. Also included is a Tk GUI ssh client, that does not require a terminal emulator, and a program for generating ssh keys. - Simplified HTTP client API, for fetching URLs. - Dict protocol implementation (RFC 2229). - Improvements to cReactor, a networking event loop implemented in C. - Lenient mode for microdom, which allows parsing very non-standard HTML, and many improvements to the DOM support. - Trial, a unit testing framework, replaces use of Python's unittest.py. The API is almost identical to Python's. - Google querying support. - Shoutcast protocol support. - Client XML-RPC support. - Many improvements to Twisted's DNS support, both client and server. - Bug fixes, more tests and documentation. What is Twisted? ================ Twisted is an event-driven framework for building networked clients and servers. It contains a powerful and simple networking core, a full-featured suite of interoperable protocols, among them a powerful web server and applications framework. Twisted supports many event loops for both server apps and GUI integration on the client side, including: - Win32 events, including GUI support - GTK+ - GTK+ 2 - Qt - wxPython - Tkinter - Java Twisted can run protocols over TCP, SSL, UDP, multicast, Unix sockets and subprocesses. It also includes scheduling support, threading integration, RDBMS event loop integration and other basic requirements for networked applications. Also included are implementations of many protocols. In some cases this includes complete frameworks providing facilities on top of the base protocol: - SSH - FTP - HTTP, including a complete web framework - XML-RPC - SOAP server framework - NNTP and complete NNTP server framework - SOCKSv4 (server only) - SMTP - IRC - telnet - POP3 - AOL's instant messaging TOC - OSCAR, used by AOL-IM as well as ICQ (client only) - DNS - MouseMan serial mice, and GPS devices - Twisted Perspective Broker, a remote object protocol

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ANN: SQLObject 0.2
by Ian Bicking 28 Jan '03

28 Jan '03

SQLObject is an object-relational mapper (i.e., a database/SQL wrapper) that supports MySQL and PostgreSQL. Version 0.2 is the first public release. The software can be found at: http://colorstudy.com/software/SQLObject Features: - Takes advantage of new-style classes (both properties and metaclasses). Hi-Fi Python! (Python 2.2 required) - No external formats or configuration (e.g. XML); your tables are described with the class definition. - Accessing a column appears the same as accessing any other attribute. - Accompanying SQLBuilder allows WHERE clauses to be coded (somewhat) naturally in Python without SQL. - Caching (or no caching, no pressure). - Fully documented (interface documentation plus source comments). - Simple (naive?) transaction support for PostgreSQL. - Conforms to traditional schema; should be adapter to legacy schemas. - Understands basic relations. - The string "get" does not appear in any method. - 100% larger version number than previous version. License: LGPL Author: Me -- Ian Bicking Colorstudy Web Development ianb(a)colorstudy.com http://www.colorstudy.com PGP: gpg --keyserver pgp.mit.edu --recv-keys 0x9B9E28B7 4869 N Talman Ave, Chicago, IL 60625 / (773) 275-7241

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ANNT: PyANT v0.30 released
by erellon＠narod.ru 27 Jan '03

27 Jan '03

PyANT is a project for porting Jakarta's ANT ideas to Python. The main advantage it has over Java is speed and support for Python scripts. PyANT written in pure Python. Project intended for developers who wants to automate their projects building and testing process Project link here: http://www.sf.net/project/pyant Changes since last version: - added "property handlers" logic, now getting property with name which is URL-like syntax is a link shows data from that url. Handlers for "http, ftp and file" presents right now. Handler "registry" for Win32 registry keys present as TODO task. Example: <echo msg="${http://pyant.sf.net}"/> should print PyANT project homepage - added CVS task just like in ANT - added more other tasks and fixed others Note: Project files available as ZIP and EXE-self installer with Inno Setup files Please do not use CVS tree right now, it's not up to date right now, I am going to complete it, ASAP. Ivan Begtin aka Erellon (erellon%narod.ru)

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PyXML 0.8.2 is released
by martin＠v.loewis.de 26 Jan '03

26 Jan '03

Version 0.8.2 of the Python/XML distribution is now available. It should be considered a beta release, and can be downloaded from the following URLs: http://prdownloads.sourceforge.net/pyxml/PyXML-0.8.2.tar.gz http://prdownloads.sourceforge.net/pyxml/PyXML-0.8.2.win32-py2.2.exe http://prdownloads.sourceforge.net/pyxml/PyXML-0.8.2-2.2.Suse81.i386.rpm Changes in this version, compared to 0.8.1: * Updated to Expat 1.95.6. * Support more DOM L3 features in minidom: isWhitespaceInElementContent, schemaType, isId, DOMImplementationSource * Various bug fixes, including - 609641: minidom nodes not pickleable - 618156: Use character references in XMLGenerator if necessary - 622286: marshal.wddx: 'recordset' element typo - 624420: Can't create 2nd Sax2.Reader - 665486: Implement SAX skippedEntity for Expat The Python/XML distribution contains the basic tools required for processing XML data using the Python programming language, assembled into one easy-to-install package. The distribution includes parsers and standard interfaces such as SAX and DOM, along with various other useful modules. The package currently contains: * XML parsers: Pyexpat (Jack Jansen), xmlproc (Lars Marius Garshol), sgmlop (Fredrik Lundh). * SAX interface (Lars Marius Garshol) * minidom DOM implementation (Paul Prescod, others) * 4DOM and 4XPath from Fourthought (Uche Ogbuji, Mike Olson) * Schema implementations: TREX (James Tauber) * Various utility modules and functions (various people) * Documentation and example programs (various people) The code is being developed bazaar-style by contributors from the Python XML Special Interest Group, so please send comments and questions to <xml-sig(a)python.org>. Bug reports may be filed on SourceForge: http://sourceforge.net/tracker/index.php?group_id=6473&atid=106473 For more information about Python and XML, see: http://www.python.org/topics/xml/ -- Martin v. Löwis http://www.informatik.hu-berlin.de/~loewis

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ann: Minimal PyPython sprint
by holger krekel 25 Jan '03

25 Jan '03

------------------------------------------------------ Not-So-Mini Sprint towards Minimal PyPython 17th-23rd Feb. 2003 "Trillke-Gut", Hildesheim, Germany ------------------------------------------------------ Everybody is invited to join our first sprint for PyPython. Or was it Minimal Python? Nevermind! We will have one or - if needed - two big rooms, beamers for presentations (and movies?), a kitchen, internet and a piano. There is a big park and some forest in case you need some fresh air. Short Ad-Hoc presentations about our areas of interest, projects or plain code will certainly be appreciated. ------------------------------------------------------ Goals of the first Minimal PyPython Marathon ------------------------------------------------------ - codify ideas that were recently discussed on the pypy-dev codespeak list. - port your favorite C-module to Python (and maintain it :-) - rebuild CPython C-implementations in pure python, e.g. the interpreter, import mechanism, builtins ... - build & enhance infrastructure (python build system, webapps, email, subversion/cvs, automated testing, ...) - further explore the 'ctypes' approach from Thomas Heller to perform C/Machine-level calls from Python without extra C-bindings. - settle on concepts - focus on having releasable results at the end - have a lot of fun meeting like minded people. ------------------------------------------------------ Current Underlying Agreements (TM) ------------------------------------------------------ Please note, that we have reached some agreement on a number of basic points: a) the Python language is not to be modified. b) simplicity wins. especially against optimization. c) if in doubt we follow the CPython/PEP lead. d) CPython core abstractions are to be cleanly formulated in simple Python. e) Macro-techniques may be used at some levels if there really is no good way to avoid them. But a) to c) still hold. f) our Pythonic core "specification" is intended to be used for all kinds of generational steps e.g to C, Bytecode, Objective-C, assembler and last-but-not-least PSYCO-Specialization. g) if in doubt we follow Armins and Christians lead regarding the right abstraction levels. And any other python(dev) people taking responsibility. h) there are a lot of wishes, code, thoughts, suggestions and ... names :-) ------------------------------------------------------ How to proceed if you are interested ------------------------------------------------------ If you want to come - even part-time - then please subscribe at http://codespeak.net/mailman/listinfo/pypy-sprint where organisational stuff will be communicated. The sprint-location's city is called Hildesheim which is close to Hannover (200 km south of Hamburg). Code-related discussions continue to take place on the pypy-dev list. For people who don't want or can't spend the money for external rooms i can probably arrange something but it will not be luxurious. FYI there are already 7-8 people who will come among them Christian Tismer, Armin Rigo and Michael Hudson. ------------------------------------------------------ Disclaimer ------------------------------------------------------ There is no explicit commercial intention behind the organisation of the sprint (yet). On the implicit hand socializing with like-minded people tends to bring up future opportunities. The physical sprint location is provided by the people living in this house: http://www.trillke.net/images/trillke_schnee.png although snow is gone for the moment. and-who-said-the-announcement-would-be-minimal'ly y'rs, holger

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Python-announce-list January 2003