Mailman 3 May 2009 - Python-announce-list

python-graph-1.5.0 released
by Pedro Matiello 03 May '09

03 May '09

python-graph release 1.5.0 http://code.google.com/p/python-graph/ ------------------------------------------------------------------------ python-graph is a library for working with graphs in Python. This software provides a suitable data structure for representing graphs and a whole set of important algorithms. The code is appropriately documented and API reference is generated automatically by epydoc. Provided features and algorithms: * Support for directed, undirected, weighted and non-weighted graphs * Support for hypergraphs * Canonical operations * XML import and export * DOT-Language output (for usage with Graphviz) * Random graph generation * Accessibility (transitive closure) * Breadth-first search * Critical path algorithm * Cut-vertex and cut-edge identification * Depth-first search * Heuristic search (A* algorithm) * Identification of connected components * Minimum spanning tree (Prim's algorithm) * Mutual-accessibility (strongly connected components) * Shortest path search (Dijkstra's algorithm) * Topological sorting * Transitive edge identification Changes in this release: * Added Critical Path Algorithm and Transitive Edge Identification; * A few bugs were fixed. Download: http://code.google.com/p/python-graph/downloads/list (tar.bz2, zip and egg packages are available.) Installing: If you have easy_install on your system, you can simply run: # easy_install python-graph

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[ANN] regobj - Pythonic object-based access to the Windows Registry
by Ryan Kelly 03 May '09

03 May '09

Hi All, I've just released the results of a nice Sunday's coding, inspired by one too many turns at futzing around with the _winreg module. The "regobj" module brings a convenient and clean object-based API for accessing the Windows Registry. http://pypi.python.org/pypi/regobj/ More details and some API examples below for those who are interested. Cheers, Ryan """ regobj: Pythonic object-based access to the Windows Registry License: BSD Current Release: 0.1.0 This module provides a thin wrapper around the standard _winreg module, allowing easier and more pythonic access to the Windows Registry. All access to the registry is done through Key objects, which (surprise!) represent a specific registry key. Starting from pre-defined root keys, all subkey access is done using standard attribute syntax: >>> HKCU.Software.Microsoft.Windows <regobj Key 'HKEY_CURRENT_USER\Software\Microsoft\Windows'> >>> HKCU.Software.MyTests Traceback (most recent call last): ... AttributeError: subkey 'MyTests' does not exist >>> HKCU.Software.MyTests = Key >>> HKCU.Software.MyTests <regobj Key 'HKEY_CURRENT_USER\Software\MyTests'> >>> del HKCU.Software.MyTests Of course, for keys that don't happen to be named like python identifiers, there are also methods that can accomplish the same thing. The individual values contained in a key can be accessed using standard item access syntax. The returned objects will be instances of the Value class, with 'name', 'type' and 'data' attributes: >>> HKCU.Software.Microsoft.Clock["iFormat"] <regobj Value (iFormat,1,REG_SZ)> >>> HKCU.Software.Microsoft.Clock["iFormat"].name 'iFormat' >>> HKCU.Software.Microsoft.Clock["iFormat"].data u'1' >>> HKCU.Software.Microsoft.Clock["iFormat"].type 1 >>> HKCU.Software.Microsoft.Clock["notavalue"] Traceback (most recent call last): ... KeyError: "no such value: 'notavalue'" Iterating over a key generates all the contained values, followed by all the contained subkeys. There are also methods to separately iterate over just the values, or just the subkeys: >>> winK = HKCU.Software.Microsoft.Windows >>> winK["testvalue"] = 42 >>> for obj in winK: ... print obj <regobj Value (testvalue,42,REG_DWORD)> <regobj Key 'HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion'> <regobj Key 'HKEY_CURRENT_USER\Software\Microsoft\Windows\Shell'> <regobj Key 'HKEY_CURRENT_USER\Software\Microsoft\Windows\ShellNoRoam'> >>> [k.name for k in winK.subkeys()] ['CurrentVersion', 'Shell', 'ShellNoRoam'] >>> [v.data for v in winK.values()] [42] These iterators also provide efficient implementations of the __contains__ and __len__ methods. Finally, there is powerful support for specifying key and value structures at creation time. The simplest case has already been demonstrated, where setting a subkey to the Key class or to None will create it without any data: >>> HKCU.Software.MyTests = None >>> len(HKCU.Software.MyTests) 0 If a subkey is assigned an existing key object, the data from that key is copied into the subkey: >>> HKCU.Software.MyTests = HKCU.Software.Microsoft.Windows >>> [k.name for k in HKCU.Software.MyTests] ['CurrentVersion', 'Shell', 'ShellNoRoam'] If a subkey is assigned a dictionary, the structure of that dictionary is copied into the subkey. Scalar values become key values, while nested dictionaries create subkeys: >>> HKCU.Software.MyTests = {"val1":7, "stuff":{"a":1,"c":2,"e":3}} >>> [v.name for v in HKCU.Software.MyTests.values()] ['val1'] >>> [k.name for k in HKCU.Software.MyTests.subkeys()] ['stuff'] >>> len(HKCU.Software.MyTests.stuff) 3 Any other value assigned to a subkey will become the default value for that key (i.e. the value with name ""): >>> HKCU.Software.MyTests = "dead parrot" >>> HKCU.Software.MyTests[""].data u'dead parrot' And that's that - enjoy! """ -- Ryan Kelly http://www.rfk.id.au | This message is digitally signed. Please visit ryan(a)rfk.id.au | http://www.rfk.id.au/ramblings/gpg/ for details

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[ANNOUNCE] PyGTK 2.15.0 - unstable
by Gian Mario Tagliaretti 02 May '09

02 May '09

A new unstable development release of the Python bindings for GTK+ has been released. The new release is available from ftp.gnome.org and its mirrors as soon as its synced correctly: http://ftp.gnome.org/pub/GNOME/sources/pygtk/2.15/ Blurb: GTK+ is a toolkit for developing graphical applications that run on systems such as Linux, Windows and MacOS X. 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. What's new since 2.14.1? - Update pygtk to use numpy instead of Numeric (Josselin Mouette, Brian Cameron, #397544) - Update the address of the FSF (Tobias Mueller, #577154) - Wrap gtk_builder_add_objects_from_string and gtk_builder_add_objects_from_file. - Add GTK+ 2.16 API (Gian) - wrap gtk.IconView.convert_widget_to_bin_window_coords (Gian) - add gtk.gdk.Window.redirect_to_drawable (Gian) - add GtkNumberUpLayout enum (Gian) - some method argument fixes (Gian) - add gtk.PrintSettings.[get|set]_number_up_layout (Gian) - Some demo fixes (Gian, Andi Albrecht) - Add various deprecation warnings (Gian Mario) PyGTK requires GTK+ >= 2.8.0 and Python >= 2.3.5 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. cheers -- Gian Mario Tagliaretti GNOME Foundation member gianmt(a)gnome.org

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bzr-1.14.1 released
by Bob Tanner 01 May '09

01 May '09

Changes from 1.14final to 1.14.1 *********************************** * Change api_minimum_version back to api_minimum_version = (1, 13, 0) The Bazaar team is happy to announce availability of a new release of the bzr adaptive version control system. Thanks to everyone who contributed patches, suggestions, and feedback. Bazaar is now available for download from http://bazaar-vcs.org/ Download as a source tarball; packages for various systems will be available soon. -- Bob Tanner <tanner(a)real-time.com> Key fingerprint = F785 DDFC CF94 7CE8 AA87 3A9D 3895 26F1 0DDB E378

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[ANN] pyOpenSSL 0.9
by Jean-Paul Calderone 01 May '09

01 May '09

I'm happy to announce the release of pyOpenSSL 0.9. This release includes several new features and a very important bug fix: * APIs have been introduced to get and set the version of an X509 request * Contexts now support loading CA certificates for verification from a specified directory or from the platform's default certificate store * DTLS-related constants, OP_NO_QUERY_MTU, OP_COOKIE_EXCHANGE, and OP_NO_TICKET are now exposed * X509Extension now has the `get_short_name´ method for retrieving the short form of the extension type * It is now possible to create extensions which use any of the three possible OpenSSL implementation approaches * FILETYPE_TEXT can be used to dump keys, certificate, and CSRs in text format * Various compiler warnings have been fixed * A bug triggered by almost all uses of pyOpenSSL from multiple threads and leading to a crash has been fixed Many thanks to numerous people who contributed patches to this release. You can find pyOpenSSL 0.9 in the downloads area of the SourceForge project page: https://sourceforge.net/project/showfiles.php?group_id=31249 Please use Launchpad to file any bug reports: https://bugs.launchpad.net/pyopenssl Jean-Paul Calderone

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Rapid Charts 1.08
by support＠rapid-charts.com 01 May '09

01 May '09

Rapid Chart for Python version 1.08 has been released. Rapid Charts includes a Visual Chart Development application and a python library for python release 2.4, 2.5 and 2.6. Two versions are available a free limited version and a 30 day try before you buy version. Visit www.rapid-charts.com for more more information and downloads. support(a)rapid-charts.com <P><A HREF="http://www.rapid-charts.com">Rapid Charts 1.08</A> - Rapid chart/graph creation. (01-May-09)

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Fwd: Python Ireland Pub Meetup - Wed 13th May 2009 @ 7pm
by Vicky Lee 01 May '09

01 May '09

[reposted plaintext by aahz(a)python.org due to gateway failure with comp.lang.python.announce] ---------- Forwarded message ---------- From: Vicky Lee <whykay(a)gmail.com> Date: Thu, Apr 30, 2009 at 6:36 PM Subject: Python Ireland Pub Meetup - Wed 13th May 2009 @ 7pm To: pythonireland(a)googlegroups.com Hi All, Due to popular demand, the meetup will be at The Bull and Castle on Christchurch from 7pm. I'll be bringing along t-shirts (and list of names for people who ordered their shirts). Also, O'Reilly is nice enough to send me their welcome pack for Python Ireland. See piccies: http://www.flickr.com/photos/whykay/3489066376/ http://www.flickr.com/photos/whykay/3488252751/ http://www.flickr.com/photos/whykay/3488252369/ The 2 books will be raffled off:- * Learn to Program by Chris Pine, see http://pine.fm/LearnToProgram/ * Learning Python, see http://oreilly.com/catalog/9780596002817/ Wiki update: http://wiki.python.ie/moin.cgi/PythonMeetup/May2009 Cheers, /// Vicky ~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~ http://irishbornchinese.com ~~ ~~ http://www.python.ie ~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~

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EuroSciPy: Extended Deadline - Call for Abstracts - May 8, 2009
by Mike Müller 01 May '09

01 May '09

Some people asked for more time to prepare their abstracts. Therefore, we extended the deadline for the submission of abstracts for EuroSciPy 2009 to May 8, 2009. Please send your abstract to mmueller at python-academy dot de. More details below. EuroSciPy 2009 ============== We're pleased to announce the EuroSciPy 2009 Conference to be held in Leipzig, Germany on July 25-26, 2009. http://www.euroscipy.org This is the second conference after the successful conference last year. Again, EuroSciPy will be a venue for the European community of users of the Python programming language in science. Call for Participation ---------------------- If you are a scientist using Python for your computational work, we'd love to have you formally present your results, methods or experiences. To apply to present a talk at this year's EuroSciPy, please submit an abstract of your talk as a PDF, MS Word or plain text file to mmueller at python-academy dot de. The deadline for abstract submission is May 8, 2009. Papers and/or presentation slides are acceptable and are due by June 15, 2009. Presentations will be allotted 30 minutes. Registration ------------ Registration is open. The registration fee is 100.00 € for early registrants and will increase to 150.00 € for late registration after June 15, 2009. Registration will include breakfast, snacks and lunch for Saturday and Sunday. Please register here: http://www.euroscipy.org/registration.html Important Dates --------------- March 21 Registration opens May 8 Abstract submission deadline May 15 Acceptance of presentations May 30 Announcement of conference program June 15 Early bird registration deadline June 15 Paper/slides submission deadline July 20 - 24 Pre-Conference courses July 25/26 Conference Venue ----- mediencampus Poetenweg 28 04155 Leipzig Germany See http://www.euroscipy.org/venue.html for details. Help Welcome ------------ You like to help make the EuroSciPy 2009 a success? Here are some ways you can get involved: * attend the conference * submit an abstract for a presentation * give a lightning talk * make EuroSciPy known: - write about it on your website - in your blog - talk to friends about it - post to local e-mail lists - post to related forums - spread flyers and posters in your institution - make entries in relevant event calendars - anything you can think of * inform potential sponsors about the event * become a sponsor If you're interested in volunteering to help organize things or have some other idea that can help the conference, please email us at mmueller at python-academy dot de. Sponsorship ----------- Do you like to sponsor the conference? There are several options available: http://www.euroscipy.org/sponsors/become_a_sponsor.html Pre-Conference Courses ---------------------- Would you like to learn Python or about some of the most used scientific libraries in Python? Then the "Python Summer Course" [1] might be for you. There are two parts to this course: * a two-day course "Introduction to Python" [2] for people with programming experience in other languages and * a three-day course "Python for Scientists and Engineers" [3] that introduces some of the most used Python tools for scientists and engineers such as NumPy, PyTables, and matplotlib Both courses can be booked individually [4]. Of course, you can attend the courses without registering for EuroSciPy. [1] http://www.python-academy.com/courses/python_summer_course.html [2] http://www.python-academy.com/courses/python_course_programmers.html [3] http://www.python-academy.com/courses/python_course_scientists.html [4] http://www.python-academy.com/courses/dates.html

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py-postgresql-0.8.1 for Python 3 Released: Bugs
by jwp 01 May '09

01 May '09

I'm pleased to announce the release of py-postgresql 0.8.1. This release marks major bug fixes for the 0.8 branch. http://python.projects.postgresql.org Fixes: * Memory leak due to __del__ and circular references. [Reported by Valentine Gogichashvili] * Encoding normalization issue. [Reported by Marc Silver] * Other minor issues. Documentation: http://python.projects.postgresql.org/0.8 Source: http://python.projects.postgresql.org/files/py-postgresql-0.8.1.tar.gz Win32 Installer: hhttp://python.projects.postgresql.org/files/py-postgresql-0.8.1.win32-py3.…

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