Mailman 3 January 2003 - Python-announce-list

ANN: wxPython 2.4.0.1
by Robin Dunn 12 Jan '03

12 Jan '03

I'm pleased to annouce that the 2.4.0.1 release of wxPython is ready for download from http://wxpython.org/. wxPython is the Python binding to the wxWindows C++ cross platform GUI library, which supports creating GUI applications on WIndows, Linux and Mac OS X with a native look and feel. This release is primarily a bugfix release and a transition from the 2.3.x series to the "stable" 2.4.x series of releases. However there have been a few releases made since I last widely announced it so I will summarize the new features in the recent releases below Updated XRCed and wxTimeCtrl contribs. Show a couple new wxGrid features in the demo. Added wxHtmlFilter. wxASSERT and related C++ runtime diagnostics are now converted to Python exceptions. When an assert happens a wxPyAssertionError (which derives from AssertionError) exception is created and when control returns back to the Python code that invoked the C++ API it will be raised. The same exception restrictions are in place as before, namely that exceptions can't cross from one Python layer through C++ to another Python layer. That simply means that if you want to catch wxPyAssertionError or any other exception that you need to do it before control returns to C++ at the end of your event handler or callback code. There is some test code in demo/wxButton.py you can use to play with this new feature. Added some methods to wxApp (SetAssertMode and GetAssertMode) that let you control how C++ assertions are processed. Valid modes are: wxPYAPP_ASSERT_SUPPRESS, wxPYAPP_ASSERT_EXCEPTION, and wxPYAPP_ASSERT_DIALOG. Using _SUPPRESS will give you behavior like the old "final" builds and the assert will be ignored, _EXCEPTION is the new default described above, and _DIALOG is like the default in 2.3.3.1 and prior "hybrid" builds. You can also combine _EXCEPTION and _DIALOG if you wish, although I don't know why you would. You can now overload OnInitGui, OnExit and OnAssert in your classes derived from wxApp. Added GetSelectedCells, GetSelectionBlockTopLeft, GetSelectionBlockBottomRight, GetSelectedRows, GetSelectedCols nethods to wxGrid. Added Python == and != operators for some basic classes. Fixed the Python wrappers for wxInputStream so they no longer block when reading from a wxProcess on wxGTK. They now work more or less as they did before 2.3.3.1 but the dual meaning of eof() has been removed. There is now a CanRead() method that lets you know if there is data waiting to be read from the pipe. Fixed method name clash in wxIEHtmlWin, renamed Refresh to RefreshPage. Added Throbber from Cliff Wells to the library and the demo. Windows installer prompts to uninstall old version first. Added wxPython.lib.evtmgr by Robb Shecter, which is an easier, more "Pythonic" and more OO method of registering handlers for wxWindows events using the Publish/Subscribe pattern. Added wxPython.lib.popupctl by Gerrit van Dyk which is a combobox-like gizmo for poping up arbitrary controls. It is currently using wxDialog because of some issues with wxPopupWindow... Added wxPython.lib.gridmovers by Gerrit van Dyk which facilitates the dragging of columns and/or rows in a wxGrid. Added wxPython.lib.multisash by Gerrit van Dyk which is a nice implementation of allowing the user to split a window any number of times either horizontally or vertically, and to close the split off windows when desired. Added helpviewer tool that displays HTML books similarly to how MS HTMLHelp viewer does. Changed how the wxPythonDocs tarball is built and added a script to launch the doc viewer. -- Robin Dunn Software Craftsman http://wxPython.org Java give you jitters? Relax with wxPython!

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[ANN] Soya 3D 0.2.1
by Jiba 11 Jan '03

11 Jan '03

Soya 3D 0.2.1 is out! WHERE? http://oomadness.tuxfamily.org/en/soya LICENSE? GPL WHAT IT IS? Soya 3D is a 3D engine for Python, written in C and Python. It rests on OpenGL for 3D and SLD for initialization. Several advanced features are proposed like landscapes, raypicking,... and a set of tutorials is also included. Jiba

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ReseekFile and MultiDict
by Andrew Dalke 11 Jan '03

11 Jan '03

I've developed two new modules people may find interesting. They can be found at http://www.dalkescientific.com/Python/ . Both modules have been placed in the public domain. The first is ReseekFile. This wraps a file handle to allow seeks back to the beginning. It is very useful in Internet work when you need to check that the the input stream is in the proper format before passing it to to the parser. Example: >>> # Check first if the file starts with 'ERROR:' >>> # and if so, raise an exception >>> import urllib2, ReseekFile >>> infile = urllib2.urlopen("http://somewhere/") >>> infile = ReseekFile(infile) >>> s = infile.readline() >>> if s.startswith("ERROR:"): >>> raise Exception(s[:-1]) >>> infile.seek(0) >>> infile.nobuffer() >>> ... proces the input file as normal .. The second is MultiDict This implements two types of dictionary-like objects where there can be more than one entry with the same key. One is OrderedMultiDict, which preserves the order of all entries across all keys. The other is UnorderedMultidict, which only preserves the order of entries for the same key. Example: >>> import MultiDict >>> od = MultiDict.OrderedMultiDict() >>> od["Name"] = "Andrew"; od["Color"] = "Green" >>> od["Name"] = "Karen"; od["Color"] = "Brown" >>> od["Name"] 'Karen' >>> od.getall("Name") ['Andrew', 'Karen'] >>> for k, v in od.allitems(): ... print "%r == %r", (k, v) ... 'Name' == 'Andrew' 'Color' == 'Green' 'Name' == 'Karen' 'Color' == 'Brown' >>> ud = MultDict.UnorderedMultiDict(od) >>> for k, v in ud.allitems(): ... print "%r == %r", (k, v) ... 'Name' == 'Andrew' 'Name' == 'Karen' 'Color' == 'Green' 'Color' == 'Brown' >>> Andrew dalke(a)dalkescientific.com -- Need usable, robust software for bioinformatics or chemical informatics? Want to integrate your different tools so you can do more science in less time? Contact us! http://www.dalkescientific.com/

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Minimal Python project
by holger krekel 10 Jan '03

10 Jan '03

Minimal Python Discussion, Coding and Sprint -------------------------------------------- We announce a mailinglist dedicated to developing a "Minimal Python" version. Minimal means that we want to have a very small C-core and as much as possible (re)implemented in python itself. This includes (parts of) the VM-Code. Building on the expected gains in flexibility we also hope to use distribution techniques such as PEP302 to ship only a minimal set of modules and load needed modules on demand. As Armin Rigo of PSYCO fame takes part in the effort, we are confident that MinimalPython will eventually run faster than today's CPython. And because Christian Tismer takes part, we are confident that we will find a radical enough approach which also fits Stackless :-) We are very interested in learning about and integrating prior art. And in hearing any doubtful or reinforcing opinions. Expertise is welcomed in all areas. So if you have an interest or even code regarding 'minimal python' please join the list: http://codespeak.net/mailman/listinfo/pypy-dev discussions previously took place on python-de and in private mails. We will repost some core ideas (in english) for further discussion. In a few months we'd like to do a one-week Sprint in Germany focusing on releasing first bits of Minimal Python. best wishes, Armin Rigo, Christian Tismer, Holger Krekel

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SC-Track Roundup 0.5.4 - an issue tracking system
by Richard Jones 10 Jan '03

10 Jan '03

================================================= SC-Track Roundup 0.5.4 - an issue tracking system ================================================= This is a bugfix release for version 0.5.x - if you're upgrading from before 0.5, you *must* read doc/upgrading.txt! Unfortunately, the Zope frontend for Roundup is currently broken, with no fix in the forseeable future. Roundup requires python 2.1.3 or later for correct operation. Users of the sqlite backend are encouraged to upgrade sqlite to version 2.7.3. We've had a good crack at bugs (thanks to all who contributed!): - key the templates cache off full path, not filename - implemented whole-database locking - hyperlinking of special text (url, email, item designator) in messages - fixed time default in date.py - fixed error in cgi/templates.py (sf bug 652089) - fixed handling of missing password (sf bug 655632) - applied patches for handling Outlook quirks (thanks Andrey Lebedev) (multipart/alternative, "fw" and content-type "name") - fire auditors and reactors in rdbms retire (thanks Sheila King) - better match for mailgw help "command" text - handle :add: better in cgi form parsing (sf bug 663235) - handle all-whitespace multilink values in forms (sf bug 663855) - fixed searching on date / interval fields (sf bug 658157) - fixed form elements names in search form to allow grouping and sorting on "creation" field - display of saved queries is now performed correctly Source and documentation is available at the website: http://roundup.sourceforge.net/ Release Info (via download page): http://sourceforge.net/projects/roundup Mailing lists - the place to ask questions: http://sourceforge.net/mail/?group_id=31577 About Roundup ============= Roundup is a simple-to-use and -install issue-tracking system with command-line, web and e-mail interfaces. It is based on the winning design from Ka-Ping Yee in the Software Carpentry "Track" design competition. Note: Ping is not responsible for this project. The contact for this project is richard(a)users.sourceforge.net. Roundup manages a number of issues (with flexible properties such as "description", "priority", and so on) and provides the ability to: (a) submit new issues, (b) find and edit existing issues, and (c) discuss issues with other participants. The system will facilitate communication among the participants by managing discussions and notifying interested parties when issues are edited. One of the major design goals for Roundup that it be simple to get going. Roundup is therefore usable "out of the box" with any python 2.1+ installation. It doesn't even need to be "installed" to be operational, though a disutils-based install script is provided. It comes with two issue tracker templates (a classic bug/feature tracker and a minimal skeleton) and six database back-ends (anydbm, bsddb, bsddb3, sqlite, metakit and gadfly).

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PyCon call for papers -- deadline looming!
by Guido van Rossum 10 Jan '03

10 Jan '03

There's still time to submit abstracts to the Python Conference in DC (March 26-28). The submission deadline for proposals is January 15. http://www.python.org/pycon/cfp.html Don't miss presenting at this unique event! --Guido van Rossum (home page: http://www.python.org/~guido/)

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[ANN] Third Austin Python Users Group Meeting
by Travis N. Vaught 09 Jan '03

09 Jan '03

Greetings, Apologies for the short notice, but we've finalized the time for the January Austin Python User's Group meeting. Alan Runyan is the speaker this month. He'll be primarily discussing Plone (http://plone.org <http://plone.org/> - Plone is cool). Where: Enthought, Inc. 515 Congress Ste. 1614 When: Monday, January 13, 2003 6:30 PM Enthought is located downtown at 6th and Congress in the Bank of America building. We're located on the 16th floor in Suite 1614. If you're coming from IH 35, you can just exit 6th Street and head West 5-6 blocks. Free parking is somewhat scarce downtown, but the dedicated can find it. For everyone else, the Littlefield parking garage is next to our building. Its entrance is between 5th and 6th streets on Brazos. Our building officially closes to the public at 6:00, but tell security that you're going to a meeting at Enthought, and they will let you in. Email travis(a)enthought.com to RSVP or with any questions. Also, you may subscribe to apug(a)scipy.org, our mailing list, at http://scipy.net/mailman/listinfo/apug . If you don't RSVP, come anyway. Bring a friend.

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by Usha MacDougan-MacDuncan 09 Jan '03

09 Jan '03

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Article: Python generators + DOM
by Uche Ogbuji 09 Jan '03

09 Jan '03

http://www.xml.com/pub/a/2003/01/08/py-xml.html Techniques and routines taking advantage of Python generators for DOM processing. Builds on my earlier article: http://www-106.ibm.com/developerworks/library/x-tipgenr.html -- Uche Ogbuji Fourthought, Inc. http://uche.ogbuji.net http://4Suite.org http://fourthought.com A Python & XML Companion - http://www.xml.com/pub/a/2002/12/11/py-xml.html XML class warfare - http://www.adtmag.com/article.asp?id=6965 MusicBrainz metadata - http://www-106.ibm.com/developerworks/xml/library/x-think14.html

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ANN: Oak DNS Server (again)
by Ed Stoner 08 Jan '03

08 Jan '03

We are pleased to announce (again) the release of the Oak DNS Server. The first announcement didn't make it through the newgroups, probably because we put an incorrect url in the announcement (we know a lot more about DNS than we do about Zope inheritance :-) The software is new but it is being run in a production environment at multiple locations already. The software can be downloaded from: http://www.digitallumber.com/oak What is it? Oak is a DNS Server written in pure python. Features: - Pure Python - Runs on Windows and various unixes - configuration through python - recursion - zone transfers - slave servers - dynamic updates - various secuirty enhancements Except for the DNSSEC, we think that Oak is a functional replacement for bind (we are using it as such). Please give it a try. It's nice to be able to manage your DNS config with python. License: LGPL ------------ Ed Stoner Digital Lumber, Inc. (www.digitallumber.com) ed(a)digitallumber.com

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