Mailman 3 February 2011 - Python-announce-list

Pydev 1.6.5 Released
by Fabio Zadrozny Feb. 3, 2011

Feb. 3, 2011

Hi All, Pydev 1.6.5 has been released Details on Pydev: http://pydev.org Details on its development: http://pydev.blogspot.com Release Highlights: ------------------------------- * Syntax highlighting now has options to have {}, [] and () as well as operators in different colors * Code generation for classes and methods: Note that this is an initial implementation of the idea, aimed as those that use a TDD (Test Driven Development) approach, so, one can create the test first and generate the classes/methods later on from using shortcuts or quick-fixes (which is something that those using JDT -- Java Development Tools -- in Eclipse should be already familiar with). This feature should be already usable on a number of situations but it's still far from being 100% complete. * Alt+Shift+S C can be used to create a class for the currently selected token * Alt+Shift+S M can be used to create a method for the currently selected token * Ctrl+1 has as a quick fix for creating a class or method * Debugger * When discovering encoding on Python 3.x, the file is opened as binary * Remote debugger (pydevd.settrace()) properly synchronized * Fixed debugger issue on interpreter shutdown on Python 2.7 * Bug fixes: * Fixed issue when doing code-completion on a line that started with some token that started with 'import'. e.g.: import_foo = a * Fixed import when running unittest with coverage * Fixed extract local (could extract to wrong location) * Fixed NPE when requesting print of arguments in the context-information tooltips * Fixed AttributeError with pydevconsole on Python 3.x What is PyDev? --------------------------- PyDev is a plugin that enables users to use Eclipse for Python, Jython and IronPython development -- making Eclipse a first class Python IDE -- It comes with many goodies such as code completion, syntax highlighting, syntax analysis, refactor, debug and many others. Cheers, -- Fabio Zadrozny ------------------------------------------------------ Software Developer Aptana http://aptana.com/ Pydev - Python Development Environment for Eclipse http://pydev.org http://pydev.blogspot.com

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Sala 1.1 released
by Petri Lehtinen Feb. 3, 2011

Feb. 3, 2011

Sala 1.1 has been released. This release adds ~/.config/sala.conf (or, more specifically, $XDG_CONFIG_HOME/sala.conf) to the list of configuration locations that are read, as per the XDG Base Directory Specification. Python 2.5 is also now supported. Install: pip install sala Docs & download: http://pypi.python.org/pypi/sala Git repository: http://github.com/akheron/sala What is sala? ============= Sala is a command-line utility that lets you store passwords and other bits of sensitive plain-text information to encrypted files on a directory hierarchy. This makes it integrate nicely with the shell; tab completion works, for example. It's also convenient to store your passwords in version control, for example. The stored information is protected by GnuPG's symmetrical encryption. Sala has been written in Python. It requires gpg[1], the GnuPGInterface[2] library, and (with the default configuration) uses pwgen[3] to suggest good passwords, if it's installed. [1] http://www.gnupg.org/ [2] http://py-gnupg.sourceforge.net/ [3] http://sourceforge.net/projects/pwgen/

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Python for Qt version 1.0.0~beta5 "color blind" released
by Renato Araujo Oliveira Filho Feb. 2, 2011

Feb. 2, 2011

The PySide team is happy to announce the fifth beta release of PySide: Python for Qt. New versions of the PySide toolchain components have been released as well. This is a source code release only; we hope our community packagers will be providing provide binary packages shortly. To acquire the source code packages, refer to our download wiki page [1] or pull the relevant tagged versions from our git repositories [2]. Major changes since 1.0.0~beta4 =============================== This is a bugfix release. Since beta4, a total of 23 bugs have been fixed. See the list of fixed bugs at the end of this message. Path towards 1.0 release ======================== The list of bugs in our Bugzilla [3] having P3 or higher priority is getting short enough that we are beginning to feel confident for to do the 1.0 release soon. The next release, in two weeks, will be our first release candidate (rc1): it will incorporate all or most of the currently open P2/P3 bugs, but after that, only clear regressions (features which have worked in previous PySide versions but not in rc1) will be fixed before 1.0. Then, the 1.0 release will happen two weeks from rc1. About PySide ============ PySide is the Nokia-sponsored Python Qt bindings project, providing access to not only the complete Qt 4.7 framework but also Qt Mobility, as well as to generator tools for rapidly generating bindings for any Qt-based libraries. The PySide project is developed in the open, with all facilities you'd expect from any modern OSS project such as all code in a git repository [2], an open Bugzilla [3] for reporting bugs, and an open design process [4]. We welcome any contribution without requiring a transfer of copyright. List of bugs fixed ================== 640 Crash in example elasticnodes.py 627 Compile error in generatorrunner - missing abstractmetalang.h, etc 632 QLineEdit.getTextMargins() segmentation fault 647 QGLWidget.bindTexture(QPixmap) causes program crash 650 Missing bindings for QNetworkProxyFactory 651 Calling disconnect() with no arguments causes segfault 562 pyside-uic does not generate some layers properties 565 QImage missing *data constructors 590 Error QFileDialog.getSaveFileName with DontConfirmOverwrite option 593 __repr__ should be more Pythonic 605 Using metaclasses with the PySide classes doesn't work 612 QColor.__reduce__ is not accurate 613 QSvgRenderer chooses QByteArray overload when given a file path 616 error compiling when public and private methods differ by the const-ness 617 conversion from C++ enum to PySide does not set repr() properly 618 QAbstractItemModel.createIndex only creates a weak reference to ptr 633 bool of null QDate (possibly other empty QString/null QObj types?) returns True for empty instance; probably should be False 641 some errors in diagramscene.py 655 bad re-implementations of QApplication.notify result in a SystemError 656 cannot inherit from QCoreApplication 659 removeParent() performs very poorly when a parent has >10000 items 566 'PySide.QtGui.QImage' object has no attribute 'scanLine' 636 Unable to navigate back to the main site from the generated documentation References ========== [1] http://developer.qt.nokia.com/wiki/PySideDownloads [2] http://qt.gitorious.org/pyside [3] http://bugs.openbossa.org/ [4] http://www.pyside.org/docs/pseps/psep-0001.html

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Python Ireland presents Feb Talks @ The Science Gallery (Wed, 9th Feb 2011, 7pm-8:15pm)
by Vicky Twomey-Lee Feb. 2, 2011

Feb. 2, 2011

Hi All, When: Wed, 9th Feb 2011, 7pm-8:15pm Where: The Science Gallery Details: ---------- "Introduction to Python" by Sean O'Donnell (Level: Beginner) Abstract: The content is an introduction to python, by means of comparing it to C, Java and Ruby. So if you can think of a snappier title, by all means go for it. "Advanced unit testing in Python" by Rory Geoghegan (Level: Intermediate) Abstract: Now that you have played around with the rudimentaries of the unittest module, and started writitng tests for your code, how can you make things easier? I'll go over the new additions to the unittest module in Python 2.7, the use of the mock library, and how to use them together to write effective unit tests. Pub afterwards: Trinity Capital Hotel, Pearse Street. This event is free. Also, just to remind you all that a Python Society AGM will be held after the talks. All are welcome to attend that as well. Venue thanks to The Science Gallery (sciencegallery.com). Details:- http://www.python.ie/meetup/2011/feb_2011_talks__science_gallery/ Cheers, /// Vicky ~~~~~~~~~~~~~~~~~~~~~~~~~ ~~ http://irishbornchinese.com ~~ ~~ http://www.python.ie ~~ ~~~~~~~~~~~~~~~~~~~~~~~~~

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REMINDER: OSCON Call for Proposals (deadline 2/7)
by Aahz Feb. 2, 2011

Feb. 2, 2011

DEADLINE Monday February 7 OSCON (O'Reilly Open Source Convention), the premier Open Source gathering, will be held in Portland, OR July 25-29. We're looking for people to deliver tutorials and shorter presentations. http://www.oscon.com/oscon2011 http://www.oscon.com/oscon2011/public/cfp/144 Hope to see you there! -- Aahz (aahz(a)pythoncraft.com) <*> http://www.pythoncraft.com/ "All problems in computer science can be solved by another level of indirection." --Butler Lampson

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ANN: marrow.util 1.1
by Alice Bevan-McGregor Feb. 1, 2011

Feb. 1, 2011

Howdy! It is my pleasure to announce an updated release of marrow.util, a package combining many commonly re-implemented utility functions, classes, and compatibility code used extensively by the marrow package suite and others. The updated package is available from PyPi: http://pypi.python.org/pypi/marrow.util Prepared eggs are available for Python 2.6, 2.7, and 3.1; a source tarball has been included as well. The following is an overview of the many utilities provided. marrow.util.bunch: * Bunch - attribute access dictionary. * MultiBunch - as per Bunch + allowing multiple values per key. marrow.util.compat: * formatdate - consistent import for Py2K + 3K. * unquote - consistent unquote_plus import and 3K bytes conversion. * range / xrange - Py2K xrange / 3K range consistent imports. * execfile - Py3K implementation and consistent import. * exception - a version-agnostic method of exception handling. * binary / unicode - consistent imports for str/bytes and unicode/str. * bytestring - ensure a string is a bytestring. * native - ensure a string is native (bytes on 2K, unicode on 3K). * uvalues - decode each value of an iterable with advanced error handling. * IO - StringIO/cStringIO/BytesIO consistent import. * parse_qsl - consistent import. marrow.util.convert: * boolean - convert common string representations into booleans. * array - powerful string to list conversions. * KeywordProcessor - powerful bidirectional string to rich datatype conversion. * tags - a KeywordProcessor for processing space-separated tag sets. * terms - a KeywordProcessor for processing demarked search terms (+foo -bar). marrow.util.escape: * unescape - ANSI color code, object property, and pronoun substitution. marrow.util.events: * WaitableEvent - an asynchronous event trigger. marrow.util.insensitive: * CaseInsensitiveDict - the name is descriptive. marrow.util.object: * flatten - recursive iterable flattening. * yield_property - a generator which returns a named property from all elements in a sequence. * yield_keyvalue - a generator which returns a named item from all elements in a sequence. * NoDefault - a useful placeholder singleton for optional keyword arguments. * merge - merge two dictionaries. * load_object - dot-colon notation string to object resolver. * Cache - a simple LRU cache implementation. * LoggingFile - a file-like object wrapper around Python logging. * CounterMeta - serialized instance creation metaclass. * getargspec - a comprehensive argspec inspector. marrow.util.path: * Path - an enhanced deque implementation for manipulating URL paths. marrow.util.patterns: * Borg - a very light-weight borg superclass or mix-in. marrow.util.pipe: * Pipe - a cross-platform TCP-based pipe implementation. * pipe - consistent import for platform-aware (Windows-compat) pipe creation. marrow.util.text: * normalize - determine the best unique name for a new item in a sequence. * ellipsis - truncate text and add an ellipsis. * wrap - wrapping of English text. * rewrap - combined unwrapping and wrapping of English text. marrow.util.time: * UTC - a simple concrete UTC implementation. * delta_to_seconds - timedelta to seconds conversion. * day, week, hour, minute, second, month, year - timedelta constants. * minute_range, hour_range, dom_range, month_range, dow_range - 2-tuple range constants. * map_month, map_dow - map strings to integers. — Alice. — Alice.

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ANN: mpmath 0.17 (Python 3 support and more)
by Fredrik Johansson Feb. 1, 2011

Feb. 1, 2011

Hi all, Version 0.17 of mpmath is now available on the project website: http://code.google.com/p/mpmath/ It can also be downloaded from the Python Package Index: http://pypi.python.org/pypi/mpmath/0.17 Mpmath is a pure-Python library for arbitrary-precision floating-point arithmetic that implements an extensive set of mathematical functions. It can be used as a standalone library or via SymPy (http://code.google.com/p/sympy/), and is also available as a standard component of Sage (http://sagemath.org/). The major news in 0.17 is that mpmath now works with Python 3. To support both Python 2.x and 3.x with the same codebase, compatibility with Python 2.4 has been dropped (mpmath now requires 2.5 or higher). New functionality in mpmath 0.17 includes an implementation of the Lerch transcendent, Riemann zeta zero counting, and improved support for evaluating derivatives of the Hurwitz zeta function and related functions. Many thanks to Juan Arias de Reyna and Case Vanhorsen who contributed to this version. For more details, see the changelog: http://mpmath.googlecode.com/svn/tags/0.17/CHANGES Extensive documentation is available at: http://mpmath.googlecode.com/svn/trunk/doc/build/index.html or http://mpmath.googlecode.com/svn/tags/0.17/doc/build/index.html Bug reports and other comments are welcome on the issue tracker at http://code.google.com/p/mpmath/issues/list or the mpmath mailing list: http://groups.google.com/group/mpmath Enjoy, Fredrik Johansson

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HTSQL 2.0-FINAL : A Query Language for the Accidental Programmer
by Clark C. Evans Feb. 1, 2011

Feb. 1, 2011

We'd like to announce the final release of HTSQL 2.0, a novel approach to querying a relational database, which is neither an ORM nor raw SQL. HTSQL is a URI-based high-level query language and web service gateway for relational databases. HTSQL is implemented as a WSGI component and could be used to embed ad-hoc reporting in your Python application. Homepage: http://htsql.org Download: http://pypi.python.org/pypi/HTSQL/ Source: http://bitbucket.org/prometheus/htsql At this point, HTSQL 2.0 may not be mature enough for production use; we expect to fill in any remaining gaps in the coming months. The current release supports SQLite and PostgreSQL. We're curious what you think. See you at PyCon 2011, http://us.pycon.org/2011/schedule/sessions/264/ Clark C. Evans & Kirill Simonov ======================================================= HTSQL -- A Query Language for the Accidental Programmer ======================================================= HTSQL ("Hyper Text Structured Query Language") is a high-level query language for relational databases. The target audience for HTSQL is the accidental programmer -- one who is not a SQL expert, yet needs a usable, comprehensive query tool for data access and reporting. HTSQL is also a web service which takes a request via HTTP, translates it into a SQL query, executes the query against a relational database, and returns the results in a format requested by the user agent (JSON, CSV, HTML, etc.). Use of HTSQL with open source databases (PostgreSQL, MySQL, SQLite) is royalty free under BSD-style conditions. Use of HTSQL with proprietary database systems (Oracle, Microsoft SQL) requires a commercial license. See ``LICENSE`` for details. For installation instructions, see ``INSTALL``. For list of new features in this release, see ``NEWS``. HTSQL documentation is in the ``doc`` directory. http://htsql.org/ The HTSQL homepage http://htsql.org/doc/showcase.html Get taste of HTSQL http://htsql.org/doc/tutorial.html The HTSQL tutorial http://bitbucket.org/prometheus/htsql HTSQL source code irc://irc.freenode.net#htsql IRC chat in #htsql on freenode http://lists.htsql.org/mailman/listinfo/htsql-users The mailing list for users of HTSQL HTSQL is copyright by Prometheus Research, LLC. HTSQL is written by Clark C. Evans <cce(a)clarkevans.com> and Kirill Simonov <xi(a)resolvent.net>. Generous support for HTSQL was provided by the Simons Foundation. This material is also based upon work supported by the National Science Foundation under Grant #0944460.

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[Ann] Celery 2.2 released!
by Ask Solem Hoel Feb. 1, 2011

Feb. 1, 2011

============================== Celery 2.2 is now available! ============================== We're happy to announce the release of Celery 2.2. Thanks to all contributors, testers and users, which without this release would not have been possible. What is it? =========== Celery is an asynchronous task queue/job queue based on distributed message passing. It is focused on real-time operation, but supports scheduling as well. The execution units, called tasks, are executed concurrently on a single or more worker nodes using multiprocessing, Eventlet, or gevent. Tasks can execute asynchronously (in the background) or synchronously (wait until ready). Celery is used in production systems to process millions of tasks a day. Celery is written in Python, but the protocol can be implemented in any language. It can also operate with other languages using webhooks. The recommended message broker is RabbitMQ, but limited support for Redis, Beanstalk, MongoDB, CouchDB, and databases (using SQLAlchemy or the Django ORM) is also available. Celery is easy to integrate with Django, Pylons and Flask, using the django-celery, celery-pylons and Flask-Celery add-on packages. Going to PyCon US 2011? ======================= Then don't forget to attend Ryan Petrello's talk, "Distributed Tasks with Celery": http://us.pycon.org/2011/schedule/sessions/1/ What's new? =========== * Eventlet and gevent support. Worker nodes can now use Eventlet/gevent as an alternative to multiprocessing. You could run several nodes running different pool implementations and route tasks to the "best tool for the job". * Jython support! * This is the last version supporting Python 2.4. * Celery is now a class that can be instantiated, and the configuration is no longer global (see http://bit.ly/i6s3qK) * Built-in support for virtual transports ("ghettoq queues") Virtual transports for Redis, Beanstalk, CouchDB, MongoDB, SQLAlchemy and the Django ORM are now available by default, and the implementations have been drastically improved. * Now using Kombu instead of Carrot. Kombu is the next generation messaging framework for Python. See http://packages.python.org/kombu * Multiple instances of event monitors can now run simultaneously (celeryev, celerymon, djcelerymon) * Redis transport can now do remote control commands. * Autoscaling of worker processes. * Magic keyword arguments pending deprecation. The magic keyword arguments will be completely removed in version 3.0. It is important that you read the full changelog for more details. And *lots* more! The Changelog contains a detailed list of all improvements and fixes: http://celeryproject.org/docs/changelog.html#version-2-2-0 Be sure to read this before you upgrade! Upgrading ========= To upgrade using pip:: $ pip install -U celery If you're using Django, then django-celery will automatically upgrade Celery as well:: $ pip install -U django-celery Resources ========= :Homepage: http://celeryproject.org :Download: http://pypi.python.org/pypi/celery :Community Links: http://celeryq.org/community.html :Documentation: http://celeryproject.org/docs/ :Code: http://github.com/ask/celery/ :FAQ: http://ask.github.com/celery/faq.html :Mailing list: http://groups.google.com/group/celery-users :IRC: #celery at irc.freenode.net. -- {Ask Solem | twitter.com/asksol }.

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