Mailman 3 May 2005 - Python-announce-list

[ANN] Solipsis, a shared virtual worlds in python
by Emmanuel Breton 10 May '05

10 May '05

Hello every one, I am pleased to announce the release of Solipsis, licensed under the GNU Lesser General Public License. Solipsis is a peer-to-peer system for a massively multi-participant virtual world. Like any real pear-to-pear system, there is no server at all: it only relies on end-users' machines. Overview -------- The shared virtual worlds of nowadays MMORPG strongly rely on privately owned servers. These servers are an expensive bottleneck that limits their scalability. In addition, these servers bound the freedom of the virtual world inhabitants and the imagination of the world-builders and developers. Solipsis solves these problems with a free and open-source system. Solipsis is a public virtual territory. The world is initially empty and only users will fill it by creating and running entities. No pre-existing cities, habitants nor scenario to respect... Solipsis is open-source, so everybody can enhance the protocols and the algorithms. Moreover, the system architecture clearly separates the different tasks, so that peer-to-peer hackers as well as multimedia geeks can find a good place to have fun here! Getting the software -------------------- The current version is 0.8.1, available as a tar.gz and as a windows installer http://solipsis.netofpeers.net/wiki/DownLoad Official Web site ----------------- http://solipsis.netofpeers.net/wiki/HomePage Requirements ------------ Current implementations of node and navigator require: * pythonâ(at least 2.3) * wx-pythonâ(at least 2.5) * twistedâ (at least 1.3, 2.0 not tested yet) * Python Imaging Library (PIL)â Enjoy! -- Emmanuel Bréton LOGILAB, Paris (France) Tel: 01 45 32 03 12 http://www.logilab.org

1 0

Topic - Tutorial: Web programming in Python with Paste
by Ian Bicking 10 May '05

10 May '05

Topic - Tutorial: Web programming in Python with Paste ------------------------------------------------------ This month Ian Bicking will be presenting a tutorial Python web programming, using several different systems: Python Paste, Webware/WebKit, Zope Page Templates (not just for Zope!), and SQLObject. The technology covered will be similar to those presented in the To-Do tutorial. Except it will be live and in person. I (Ian) plan to develop a small application from scratch in front of everyone without preparation (or even forethought) -- you will get to gasp in disappointment or awe as I no doubt both embarrass and redeam myself. Hopefully this will present a realistic picture of what development is like with the stack, mistakes included. There will also be time to chat, and many opportunities to ask questions. We encourage people at all levels to attend. Location -------- This month Dave Rock and Acxiom will be hosting ChiPy in Downer's Grove: Acxiom 3333 Finley Road Downers Grove Near the intersection of I-355 and Buttefield Road. Convenient to Fry's! There's ample parking! Carpooling from the city? Check the mailing list. Links ----- ChiPy: http://chipy.org Mailing List: http://lonelylion.com/mailman/listinfo/chipy Python Paste: http://pythonpaste.org Webware: http://webwareforpython.org Zope Page Templates: http://www.zope.org/Documentation/Articles/ZPT1 SQLObject: http://sqlobject.org To-Do tutorial: http://pythonpaste.org/docs/TodoTutorial.html ChiPy meets once a month on the second Thursday.

1 0

ANNOUNCE: PyGTK 2.6.2
by Johan Dahlin 09 May '05

09 May '05

I am pleased to announce version 2.6.2 of the Python bindings for GTK. The new release is available from ftp.gnome.org as and its mirrors as soon as its synced correctly: http://ftp.gnome.org/pub/GNOME/sources/pygtk/2.6/pygtk-2.6.2.tar.gz Changes since 2.6.1: - Allow None to be sent in to set_group radio widgets (Johan, Lorenzo) - guint/gsize as longs (Gustavo) - Check for exceptions in child_watch (Mark McLoughlin) - Bug fixes (Johan, Manish Singh, John Finaly, Ulrik Svensson) Blurb: GTK is a toolkit for developing graphical applications that run on POSIX systems such as Linux, Windows and MacOS X (provided that the X server for MacOS X has been installed). It provides a comprehensive set of GUI widgets, can display Unicode bidi text. It links into the Gnome Accessibility Framework through the ATK library. PyGTK provides a convenient wrapper for the GTK+ library for use in Python programs, and takes care of many of the boring details such as managing memory and type casting. When combined with PyORBit and gnome-python, it can be used to write full featured Gnome applications. Like the GTK+ library itself PyGTK is licensed under the GNU LGPL, so is suitable for use in both free software and proprietary applications. It is already in use in many applications ranging from small single purpose scripts up to large full features applications. PyGTK requires GTK+ >= 2.6 and Python >= 2.3 to build. Bug reports, as always, should go to Bugzilla; check out http://pygtk.org/developer.html and http://pygtk.org/feedback.html for links to posting and querying bug reports for PyGTK. -- Johan Dahlin johan(a)gnome.org

1 0

Frog 1.5 (web log server)
by Irmen de Jong 09 May '05

09 May '05

I've released a new version of Frog, a web log server written in 100% python. Get version 1.5 from http://snakelets.sourceforge.net/frog/index.html Some of the features: - multi user - no database needed (uses files for storage) - no web server needed (it runs in Snakelets, which has its own web server) - splitted articles ("read more...") - email notification when comment is added - formatting similar to 'bbcode', supports images and other files - anti-spam measures: puzzles, auto-updating blacklist, anti-indexing hyperlinks in comments (rel="nofollow") - outputs lean xhtml+css pages - RSS feeds - fully unicode compatible - web-based file manager, available as separate module Detailed info on the site mentioned above. Have fun :) --Irmen PS You can see Frog in action here: http://www.razorvine.net/snake/frog/user/irmen/

1 0

PyAr - Python Argentina 9th Meeting, this Thursday
by Batista, Facundo 09 May '05

09 May '05

The Argentine Python User Group, PyAr, will have its nineth meeting this Thursday, May 12nd at 7:00pm. Agenda ------ Despite our agenda tends to be rather open, this time we would like to cover these topics: - See what we'll do with the t-shirts, and other "merchandising". - Analyze a future meeting point. Where ----- We're meeting at Hip Bar, Hipólito Yirigoyen 640, Ciudad de Buenos Aires, starting at 19hs. We will be in the back room, so please ask the barman for us. About PyAr ---------- For more information on PyAr see http://pyar.decode.com.ar (in Spanish), or join our mailing list (Also in Spanish. For instructions see http://pyar.decode.com.ar/Members/ltorre/listademail) We meet on the second Thursday of every month. . Facundo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADVERTENCIA. La información contenida en este mensaje y cualquier archivo anexo al mismo, son para uso exclusivo del destinatario y pueden contener información confidencial o propietaria, cuya divulgación es sancionada por la ley. Si Ud. No es uno de los destinatarios consignados o la persona responsable de hacer llegar este mensaje a los destinatarios consignados, no está autorizado a divulgar, copiar, distribuir o retener información (o parte de ella) contenida en este mensaje. Por favor notifíquenos respondiendo al remitente, borre el mensaje original y borre las copias (impresas o grabadas en cualquier medio magnético) que pueda haber realizado del mismo. Todas las opiniones contenidas en este mail son propias del autor del mensaje y no necesariamente coinciden con las de Telefónica Comunicaciones Personales S.A. o alguna empresa asociada. Los mensajes electrónicos pueden ser alterados, motivo por el cual Telefónica Comunicaciones Personales S.A. no aceptará ninguna obligación cualquiera sea el resultante de este mensaje. Muchas Gracias.

1 0

Dr. Dobb's Python-URL! - weekly Python news and links (May 9)
by Simon Brunning 09 May '05

09 May '05

QOTW: "It's not perfect, but then nobody in this thread has offered anything even remotely resembling perfect documentation for regular expressions yet. <wink>" - Peter Hansen "Python's flavor of OO is perfectly valid and usable, even though it doesn't follow the Java Holy Bible of Object Orientation (gasp!)" - Hans Nowak "It's highly arguable if Python is "better" than C#, but from a control-your-own-destiny angle, Python is a complete slam dunk. Python works well on *nix, Java, .NET and Mac OS X. It's open source. It's sane. But I won't argue it's fast. It's usually just not so slow you care." - Jonathan Rentzsch String Manipulation in Python: http://www.devshed.com/c/a/Python/String-Manipulation/ Why you can't detect a float's significant digits: http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/8… Dependency Injection The Python Way: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/413268 What is Paste? http://blog.ianbicking.org/what-is-paste.html Finding peaks and valleys: http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/6… Type-safe Enums in Python: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/413486 Python turns up again in a Microsoft outpost: http://www.informit.com/guides/content.asp?g=windowsserver&seqNum=183&rl=1 Encryption with Python: http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/5… The importance of being selfish, deja vu: http://zephyrfalcon.org/weblog2/arch_e10_00770.html#e776 Notable releases: CherryPy-2.0-final: http://groups-beta.google.com/group/comp.lang.python.announce/browse_thread… BeautifulSoup 2.1.0: http://www.crummy.com/software/BeautifulSoup/ KirbyBase 1.8.2: http://www.netpromi.com/kirbybase.html ======================================================================== 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/ The Python Business Forum "further[s] the interests of companies that base their business on ... Python." http://www.python-in-business.org 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.

1 0

ANN: rest2web 0.1.0
by Fuzzyman 09 May '05

09 May '05

Finally, the long awaited (*ahem*) release of **rest2web**. It's an early release - lot's more features still to be added - but it all works. *Hurrah* rest2web is a tool for autogenerating websites. It allows you to store your contents in reST format, and generate pages and indexes from templates. It uses a simple but flexible templating system and generates index pages and navigation links. This means that adding new pages is as easy as dropping a text file into the right folder. rest2web will handle adding the link to the index page and creating the new page from a template and the contents. Removing a page is as easy as deleting a single file, and have rest2web automatically rebuild the indexes. The download includes the rest2web code, and docs, and a test site. The test site serves as a simple illustration of how rest2web builds pages and indexes. For full details see any of the following pages : * `rest2web Docs` - http://www.voidspace.org.uk/python/rest2web * `Example Site` - http://www.voidspace.org.uk/python/rest2web/test_site * `Quick Download (608k)` - http://www.voidspace.org.uk/cgi-bin/voidspace/downman.py?file=rest2web.zip The next features to add will be auto sitemap generation and a bigger change (under the hood) to make the index data available to every page in a section. This will allow pages to have sidebars with links, rather than just a single index page per section. I'm already building part of the Voidspace website with rest2web, over the next few months it will take over.... Lots of other features, tested on Linux and Windoze. Fuzzyman http://www.voidspace.org.uk/python

1 0

Announce: Python for .NET 1.0 RC1 released
by Brian Lloyd 09 May '05

09 May '05

Hi all - I'm happy to announce the release of Python for .NET 1.0 RC1. You can download it from: http://www.zope.org/Members/Brian/PythonNet Highlights of this release: - Implemented a workaround for the fact that exceptions cannot be new-style classes in the CPython interpreter. Managed exceptions can now be raised and caught naturally from Python - Implemented support for invoking methods with out and ref parameters. Because there is no real equivalent to these in Python, methods that have out or ref parameters will return a tuple. The tuple will contain the result of the method as its first item, followed by out parameter values in the order of their declaration in the method signature. - Fixed a refcount problem that caused a crash when CLR was imported in an existing installed Python interpreter. - Added an automatic conversion from Python strings to byte[]. This makes it easier to pass byte[] data to managed methods (or set properties, etc.) as a Python string without having to write explicit conversion code. Also works for sbyte arrays. Note that byte and sbyte arrays returned from managed methods or obtained from properties or fields do *not* get converted to Python strings - they remain instances of Byte[] or SByte[]. - Added conversion of generic Python sequences to object arrays when appropriate (thanks to Mackenzie Straight for the patch). - Added a bit of cautionary documentation for embedders, focused on correct handling of the Python global interpreter lock from managed code for code that calls into Python. - PyObject.FromManagedObject now correctly returns the Python None object if the input is a null reference. Also added a new AsManagedObject method to PyObject, making it easier to convert a Python-wrapped managed object to the real managed object. - Created a simple installer for windows platforms. All known bugs have also been fixed - thanks to all who have sent in issue reports and patches for past releases. At this point, the only thing I plan to do before a 1.0 final is fix any new issues and add to the documentation (probably including a few specific examples of embedding Python for .NET in a .NET application). Enjoy! ;) Brian Lloyd brian(a)zope.com V.P. Engineering 540.361.1716 Zope Corporation http://www.zope.com

1 0

imgSeek 0.8.5
by rnc000＠gmail.com 09 May '05

09 May '05

imgSeek ------- imgSeek is a photo collection manager and viewer with content-based search and many other features. The query is expressed either as a rough sketch painted by the user or as another image you supply (or an image in your collection). You may also do slideshows, generate web photo albums, edit image metadata including EXIF and IPTC data, organize images into a keyword hierarchy, and more. Changes ------- * fixes bug at startup on new versions of PyQT (QSizePolicy) * fixes bug at startup when detecting locale * Applied patch by Daniel Fahlgren. Fixes bug which made compared image (when loaded from an external file) to be loaded rotated. * implemented a "low level" jpeg loader, which interacts directly with libjpeg so now imgSeek doesn't have to read the whole jpeg file in order to generate thumbnails and add an image to database. That represents a reduction by 1/3 to the time needed to thumbnail and add images to the database. On some benchmarks, adding 160 files (1600x1200) would take an average of 1'10" and now it takes 32". * fixed bug on Windows where dialogs wouldn't show up again after being closed * fixed some unicode bugs * added "Rename image" menu option * finished Portuguese (BR) translation * added i18n support Requires -------- - Python 2.2.x, QT 3.x and PyQT 3.5. (3.4 should work) - ImageMagick development files or QT development files. Recommended: - Python Imaging Library. Links ----- Download: http://imgseek.python-hosting.com/wiki/Download Homepage: http://imgseek.python-hosting.com/ Screenshots: http://imgseek.sourceforge.net/sshot/ Complete ChangeLog: http://imgseek.python-hosting.com/timeline

1 0

[ANN] pysqlite 2.0.beta1
by Gerhard Haering 08 May '05

08 May '05

================== pysqlite 2.0.beta1 ================== I'm glad to announce pysqlite 2.0.beta1. The API is 98 % stable now. And pysqlite itself should be a lot more stable too, now. The most notable changes are a lot of fixed refcount bugs, and the added documentation. Download the release here: Sources: http://initd.org/pub/software/pysqlite/releases/2.0/2.0.beta1/pysqlite-2.0.… win32 binaries for Python 2.3: http://initd.org/pub/software/pysqlite/releases/2.0/2.0.beta1/pysqlite-2.0.… win32 binaries for Python 2.4: http://initd.org/pub/software/pysqlite/releases/2.0/2.0.beta1/pysqlite-2.0.… pysqlite homepage, bug tracker, wiki: http://pysqlite.org/ Changes since 2.0.alpha4: ========================= - Added pysqlite 2.0 documentation: usage guide and source installation guide. Adapted from kinterbasdb documentation with the permission of David Rushby. - Fixed several refcount problems. Per test suite run, lose 0 references instead of 550 per test suite run like in alpha4. - If a database file cannot be opened, raise an OperationalError specifically instead of a DatabaseError. - Call the row factory with (cursor, row_tuple) instead of (row_tuple). - Fixed a crash in .connect() when you tried to set a keyword argument. It's quite annoying that Python doesn't offer a method to extract a single keyword argument at C-level easily. Argh! So I bit the bullet and duplicated the parameter extraction code. - The type name of PrepareProtocol was corrected. Only interesting for introspection. - Added more tests to the test suite. - Implemented cursor.arraysize. - cursor.rowcount is now -1 instead of None in case of "not determined", like the DB-API requires. - Implemented autocommit mode which replaces the ''no_implicit_begin'' parameter to the module-level connect(). This way, we're more compatible with other DB-API modules. autocommit parameter in module-level connect and also an autocommit property of connections. -- The "begin" method of connections is gone. - Completely reworked the advanced type detection: o connection.register_converter is gone o instead, the dictionary connection.converters is exposed directly. o The parameter more_types to the module-level connect is gone. o Instead, use any combination of PARSE_DECLTYPES and PARSE_COLNAMES for the new paramter detect_types. PARSE_DECLTYPES will parse out the first word of a declared type and look up a converter in connection.converters: create table foo(col mytype not null) The decltype would be "mytype not null", but PARSE_DECLTYPES will cut out "mytype" and look for a converter in converters["mytype"]. If it finds any, it will use it to convert the value. Otherwise, the standard SQLite manifest typing will be used. PARSE_COLNAMES will parse out the column names and look up a converter in connection.converters: cur.execute("select 1 as "colname [mytype]") the column names will be parsed for [...], in this case mytype will be found as the type for the colum, and the converters dictionary will be consulted for an appropriate converter function. If none is found, the standard SQLite manifest typing will be used. Also, the column names in cursor.description will only consist of the first word. So it would be "colname" in our example, not "colname [mytype]". - cursor.coltypes is gone. - The connection attribute of cursors is now made available at Python level. That's an optional DB-API extension. - The exception classes are now attributes of the connection objects. That's an optional DB-API extension. - Optimized the _sqlite_step_with_busyhandler() function by making time.time() and time.sleep() available at module import instead of importing the "time" module each time and getting out the "time" and "sleep" functions each time. Big performance improvement. - Some work on the benchmarks. - Made the destructor of the Cursor class more stable. It used to crash when an error occured in the Cursor *constructor*. - Implemented a check that the parameter for Cursor() is actually an instance of the Connection class (or a subclass thereof). - Allow long integers as parameters. Re-enable test cases for this. -- Gerhard Häring - gh(a)ghaering.de - Python, web & database development pysqlite - Powerful and fast embedded database engine "SQLite" for Python.

1 0