🌐 Mailman 3 July 2005 - Python-announce-list - python.org

ANN: KirbyBase 2.0 beta 1
by Jamey Cribbs July 14, 2005

July 14, 2005

I would like to announce the first beta of version 2 of KirbyBase, a simple, pure-Python database management system that stores it's data in plain-text files. Version 2 is a total rewrite of the code, a major change in the api, and a major improvement (I hope) in the syntax used to express queries, inserts, and updates. Because of the dramatic changes, I wanted to get this beta out in the hopes that I can get some early feedback on the new api and syntax, before releasing version 2. You can download the beta from here: http://www.netpromi.com/files/KirbyBase_Python_2.0_beta_1.zip Included in the zip file is a script, kbtest.py that has numerous examples of the new syntax. I'll try to give you a small flavor of it here: To specify a select query in the old version of KirbyBase you would do something like this: db.select('plane.tbl', ['country', 'speed'], ['USA', '> 300']) which says, "Select all planes from the US with a speed greater than 300mph. In the new version of KirbyBase you could state the query using named arguments: plane_tbl.select(country='USA', speed='> 300') or, using a dictionary: plane_tbl.select({'country': 'USA', 'speed': '> 300'}) or, you could even use a lambda, like this: plane_tbl.select(lambda r: r.country == 'USA' and r.speed > 300) I personally prefer the latter, but I realize that lambda's are quite controversial just now, so I offer alternative ways to specify select criteria. One of the cool things about using lambdas is that it gives you more power in your selects, like being able to use regular expressions and being able to use "or" logic. Anyway, this is just a small taste of the changes. The changes actually go much deeper and, I think, make the resulting api much more "Pythonic". About the only thing that hasn't changed is the table structure in the physical file (well, there is one small change, but it is easily made). It is currently a good bit slower than the current version of KirbyBase; I will work on optimizing it after the api is frozen. For those of you who have used the Ruby version of KirbyBase, this new Python version closely resembles that, while trying to be as Python-like as possible. There is no manual yet, but I think you can get a good feel for the differences by looking at kbtest.py. I would be very interested in any feedback you can give me on the new version. Jamey Cribbs jcribbs(a)twmi.rr.com

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ANN: CherryPy-2.1.0-beta released
by remi＠cherrypy.org July 14, 2005

July 14, 2005

Hello everyone, I am happy to announce the first beta release of CherryPy-2.1 This release is a major step forward for CherryPy. It is packed with new features and bug fixes. Also, the CherryPy community is now growing quite fast and it is very active. Many people contributed to this release. Here are the main improvements in this release: - New WSGI interface, which allow CherryPy sites to be deployed on any WSGI server. People are already running it on mod_python, FastCGI, SCGI, IIS or CherryPy's own built-in HTTP server. - New implementation for sessions, which supports multiple backends - Built-in list of convenient "filters" for things like gzip compression, XHTML validation, caching, unicode decoding/encoding, authentication, XML-RPC wrapper, etc ... These filters can easily be enabled/disabled through configuration. - New "development" mode which provides things like autoreload (no need to manually restart your server when you make a change), logging of page stats, etc ... - Better handling of file uploads - Internal implementation now uses generators everywhere (no more StringIO) - New built-in HTTP server implementation *************** About CherryPy: CherryPy-2 is a pythonic, object-oriented web development framework. Here is a sample Hello, World in CherryPy-2: # import cherrypy # class HelloWorld: # @cherrypy.expose # def index(self): # yield "<html><body>" # yield "Hello world!" # yield "</body></html>" # cherrypy.root = HelloWorld() # cherrypy.server.start() Main properties: - this code starts a multi-threaded HTTP server that dispatches requests to methods - requests like "http://domain/dir/page?arg1=va l1&arg2=val2" are mapped to "dir.page(arg1='val1', arg2='val2')" - CherryPy also supports "RESTful" URLs like http://domain/book/science/9 - requests are mapped to an object tree that is "mounted" on cherrypy.root (for instance: "cherrypy.root.user", "cherrypy.root.user.remi", ...) - method must be explicitly exposed with a decorator "@cherrypy.expose" (or "index.exposed = True" for Python-2.3) Remi. http://www.cherrypy.org

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ANN: PyMedia 1.3.5-pre1 for Windows
by Dmitry Borisov July 14, 2005

July 14, 2005

Hi all, Just wanted to let you know that early prerelease of PyMedia 1.3.5 is out. What is it ? ---------------------------------------------------------------- PyMedia is a media library for Python based on the following libraries: libavcodec, libavformat, libdvdcss, libdvdread It has simple interface and yet powerfull for writing multimedia apps in Python. Features ---------------------------------------------------------------- 1. Audio decoding/encoding for the following types: - mp2, mp3, ac3, ogg, wma 2. Video decoding/encoding for the following types: - mpeg1,2 ( dvd, vcd, svcd ), mpeg4, xvid, asf, mov 3. Video/Audio muxing for mpeg files only 4. Direct access to sound device( Input/Output ). Input is synchronous in Linux. 5. Sound manipulation classes such as Resampler and SpectrAnalyzer 6. Direct access to cdda tracks for easy grabbing and encoding Audio CDs 7. Direct access to dvd tracks for playing DVD movies( all types ) 8. Ability to convert video frames from YUV<->BMP formats 9. Simple interface and portability( Windows/Linux/cygwin ) What's new ---------------------------------------------------------------- 1. FLAC support 2. Muxer object is suitable for audio and video and become global for pymedia. It enables simpler audio/video demuxing 3. Video playback rate was tuned to be as close to mplayer as possible 4. Precompiled version for Python2.4 on Windows available 5. Sound module for Windows works Bugs ---------------------------------------------------------------- 1. AAC decoder does not work correctly 2. WMA decoder has been corrupted and may not play somethimes 3. Video encoding has bugs with PTS/DTS handling 4. Muxing for OGG does not work Downoad ---------------------------------------------------------------- Just check the http://pymedia.sourceforge.net and download the latest Windows binary version( 1.3.5-pre1 ). There is no tarball available since existing version resides in CVS. You're welcome to try it out on Linux ! How to use ---------------------------------------------------------------- First of all you can see PyCar application http://pymedia.org/pycar/ For everything else see the tutorials on a web site http://pymedia.org/tut/ Please note that some of the chapters may not be up-to-date. Let me know if something does not work for you ! Enjoy, Dmitry/ -- XS2Mail: Check your mail anywhere http://www.xs2mail.com/

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ReleaseForge 0.9.0 - A SourceForge/Freshmeat release tool
by stuff＠mailzilla.net July 13, 2005

July 13, 2005

ReleaseForge 0.9.0 is now available for immediate download at: http://releaseforge.sourceforg e.net ------------------------------------------------------- About ReleaseForge 0.9.0: ReleaseForge 0.9.0 is a minor enhancement release. This version allows the SourceForge developer the ability to email project announcements to mailing lists and individual users directly from within ReleaseForge. Additionally, the --auto command line option was added which, when used, will automatically login to SourceForge and Freshmeat accounts without prompting you for username/password credentials. Also, the --config command line option has been deprecated and the configuration file has been moved to the ReleaseForge data directory (typically, $HOME/.releaseforge). If you are upgrading from a previous version you may wish to refer to these FAQ sections for more gory details: http://releaseforge.sourceforge.net/faq.html#upgrade http://releaseforge.sourceforge.net/faq.html#config There are also some minor bug fixes and feature enhancements. ------------------------------------------------------- About ReleaseForge: ReleaseForge is a GUI application designed for project administrators and release engineers of projects that are hosted at SourceForge. It is intended to make it easier and faster to create a new release and edit existing releases rather than using the SourceForge Web interface. ReleaseForge streamlines the release effort by prompting you for information regarding your new release (version info, change log, release notes, files to include, etc). It then seamlessly negotiates with the SourceForge Web server, creating your release, posting your release notes/change log, uploading your files to the SourceForge FTP server, selecting the files for inclusion in your release on the SourceForge Web server, updating the file attributes of each of the files and then, if appropriate, notifying monitoring users of the new release. ReleaseForge also includes support for posting Freshmeat news announcements and SourceForge project news announcements. ------------------------------------------------------- http://releaseforge.sourceforge.net

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Dr. Dobb's Python-URL! - weekly Python news and links (Jul 13)
by Simon Brunning July 13, 2005

July 13, 2005

QOTW: "The posts do share an erroneous, implied assumption that the investment in learning each language is equal. Python has a strong competitive advantage over Java and C++ in terms of learnability. A person can get up to speed in a few days with Python." - Raymond Hettinger "You know, this is the most concise example of feature-creep in a specification that I've ever seen." - Christopher Subich "With Lisp or Forth, a master programmer has unlimited power and expressiveness. With Python, even a regular guy can reach for the stars." - Raymond Hettinger Lisp's macros are undoubtedly a powerful feature, but are they powerful enough to make List development faster than Python development? Do we want macros in Python? http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/c… List comprehensions are almost identical to generator expressions wrapped in list() calls. Does that mean that list comps will go away in Python 3? Should they? http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/b… A Bright, Shiny Service: Sparklines: http://www.xml.com/pub/a/2005/06/22/sparklines.html Which is faster, if, or try/except? Which is more Pythonic? http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/8… Rbt wants to break out of nested loops. He's shown several ways of doing it, but for my money, Raymond's approach is the most elegant: http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/b… Charlie Calvert wrote a couple of articles that advocate Python, and he's looking for some backup: http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/7… ======================================================================== Everything Python-related 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 Notice especially the master FAQ http://www.python.org/doc/FAQ.html PythonWare complements the digest you're reading with the marvelous daily python url http://www.pythonware.com/daily Mygale is a news-gathering webcrawler that specializes in (new) World-Wide Web articles related to Python. http://www.awaretek.com/nowak/mygale.html While cosmetically similar, Mygale and the Daily Python-URL are utterly different in their technologies and generally in their results. For far, FAR more Python reading than any one mind should absorb, much of it quite interesting, several pages index much of the universe of Pybloggers. http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog http://www.planetpython.org/ http://mechanicalcat.net/pyblagg.html comp.lang.python.announce announces new Python software. Be sure to scan this newsgroup weekly. http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce Steve Bethard, Tim Lesher, and Tony Meyer continue the marvelous tradition early borne by Andrew Kuchling, Michael Hudson and Brett Cannon of intelligently summarizing action on the python-dev mailing list once every other week. http://www.python.org/dev/summary/ The Python Package Index catalogues packages. http://www.python.org/pypi/ The somewhat older Vaults of Parnassus ambitiously collects references to all sorts of 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 Success Stories--from air-traffic control to on-line match-making--can inspire you or decision-makers to whom you're subject with a vision of what the language makes practical. http://www.pythonology.com/success The Python Software Foundation (PSF) has replaced the Python Consortium as an independent nexus of activity. It has official responsibility for Python's development and maintenance. http://www.python.org/psf/ Among the ways you can support PSF is with a donation. http://www.python.org/psf/donate.html Kurt B. Kaiser publishes a weekly report on faults and patches. http://www.google.com/groups?as_usubject=weekly%20python%20patch Cetus collects Python hyperlinks. http://www.cetus-links.org/oo_python.html Python FAQTS http://python.faqts.com/ The Cookbook is a collaborative effort to capture useful and interesting recipes. http://aspn.activestate.com/ASPN/Cookbook/Python Among several Python-oriented RSS/RDF feeds available are http://www.python.org/channews.rdf http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi http://python.de/backend.php For more, see http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all The old Python "To-Do List" now lives principally in a SourceForge reincarnation. http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse http://python.sourceforge.net/peps/pep-0042.html The online Python Journal is posted at pythonjournal.cognizor.com. editor(a)pythonjournal.com and editor(a)pythonjournal.cognizor.com welcome submission of material that helps people's understanding of Python use, and offer Web presentation of your work. del.icio.us presents an intriguing approach to reference commentary. It already aggregates quite a bit of Python intelligence. http://del.icio.us/tag/python *Py: the Journal of the Python Language* http://www.pyzine.com Archive probing tricks of the trade: http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100 http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.pyth… Previous - (U)se the (R)esource, (L)uke! - messages are listed here: http://www.ddj.com/topics/pythonurl/ (requires subscription) http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&s… http://purl.org/thecliff/python/url.html (dormant) or http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lan… Suggestions/corrections for next week's posting are always welcome. E-mail to <Python-URL(a)phaseit.net> should get through. To receive a new issue of this posting in e-mail each Monday morning (approximately), ask <claird(a)phaseit.net> 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.

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SDXF - Stani's DXF library for Python
by s_t_a_n_i＠gmx.net July 13, 2005

July 13, 2005

SDXF is a Python library to generate DXF files. DXF is an abbreviation of Data Exchange File, a vector graphics file format. It is supported by virtually all CAD products (such as AutoCAD, Blender, 3Dstudio, Maya,Vectorworks...) and vector drawing programs (such as Illustrator, Flash, ...). SDXF can generate complex CAD drawings (dxf format) with all kind of entities (such as 3DFace, Arc, Insert, Circle, Line, Mtext, Point, Polyline, Rectangle (can be filled), Solid & Text). They can be structured with Layers, Blocks, Linetypes, Text styles and Views. Example import sdxf d=sdxf.Drawing() d.append(sdxf.Text('Hello World!',point=(3,0,1))) d.append(sdxf.Line(points=[(0,0,0),(1,1,1)])) d.saveas('hello_world.dxf') For more info: http://www.stani.be/python/sdxf

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ANN: PyX 0.8 released
by wobsta July 13, 2005

July 13, 2005

We're pleased to announce the release of PyX 0.8. PyX now supports PDF output and also the generation of multi-page PS/PDF documents. The internals of the path system have been cleaned up and the external interface has been streamlined. The axis data handling of the graph component has undergone a major revision. Many other improvements and bug fixes are included in this release. What is PyX? PyX is a Python package for the creation of PostScript and PDF files. It combines an abstraction of the PostScript drawing model with a TeX/LaTeX interface. Complex tasks like 2d and 3d plots in publication-ready quality are built out of these primitives. For further information please visit http://pyx.sourceforge.net/ André, Jörg, and Michael

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[ANN] Boa Constructor 0.4.4
by Riaan Booysen July 13, 2005

July 13, 2005

Hi everyone, Boa Constructor 0.4.4 has been released and is available from the SourceForge file download page. http://sourceforge.net/project/showfiles.php?group_id=1909&package_id=1856&… Summary of changes since 0.4.0: * The entire sourcecode base is now upgraded to wxPython 2.5 style code. * Python code has also been modernised. * Improved Python code completion and call tips. * New controls supported: wx.DatePickerCtrl, wx.GridBagSizer. * Registration api added for plug-ins. * Improved wxMAC compatibility. * Python and wxPython docs now included in the main download. * Many bug fixes. Requires wxPython 2.5 or higher. Enjoy, Riaan.

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Australian Open Source Developers' Conference
by Simon Taylor July 13, 2005

July 13, 2005

Announcement: OSDC 2005 is up and running. The second Australian OSDC (Open Source Developers' Conference) will be held on the 5th, 6th and 7th of December 2005 at Monash University in Melbourne. The 2004 Conference was an outstanding success with over 160 delegates attending, including a significant number from interstate and overseas. The quality of presentations and general enthusiasm of the attendees confirmed the growing reputation and strength of open source development in Australia. Most of last year's attendees plan to attend the conference again in 2005. In 2005, OSDC will be even bigger and better. OSDC is a great opportunity for open source devotees to attend an affordable conference where the main focus is software development. Companies and other organisations will find the conference an ideal avenue for providing professional development for staff, identifying trends and partners and promoting their services. The conference web site is: http://www.osdc.com.au

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ANN: pyxsldoc 0.69
by Christof July 12, 2005

July 12, 2005

what is it ---------- An application to produce documentation for XSLT files in XHTML format, similar to what javadoc does for Java files. changes since the last release ------------------------------ * bugfix in util.py return value if no comment was given was wrong * bugfix in xsl/doc.xsl param anchor links did not work * cmdline option -v --verbose is ignored and always set to True now see http://cthedot.de/pyxsldoc/README.txt for a complete list of changes license ------- pyXSLdoc is published under the LGPL. download -------- download pyXSLdoc v0.69 - 050712 from http://cthedot.de/pyxsldoc/ pyXSLdoc needs * Python 2.3 (tested with Python 2.4.1 on Windows XP only) * Pyana (tested with Pyana 0.9.2 only) * Docutils (tested with Docutils 0.3.10 only) find more docs on the website... any comment would be nice! christof hoeke <P><A HREF="http://cthedot.de/pyxsldoc/">pyXSLdoc 0.69</A> - generate XSLT documentation (12-Jul-05)

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