Python-announce-list April 2011

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39 participants
50 discussions

CheckIO - service about the Python
by Alexander Lyabah 30 Apr '11

30 Apr '11

Hi. My name is Alexander. I spend a lot of time in writing a new service checkio.org It's all about python, learn python, find the best solution in python. And Im looking for feedback from peoples who best in python. Here I make some video tutorial about this service http://checkio.blip.tv/ What do you think about it? I'm also have a not a very good English, so I need help with it too, because some parts of checkio.org not in very well English Thanks!

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mrjob v0.2.5 released
by Jimmy Retzlaff 30 Apr '11

30 Apr '11

What is mrjob? ----------------------- mrjob is a Python package that helps you write and run Hadoop Streaming jobs. mrjob fully supports Amazon's Elastic MapReduce (EMR) service, which allows you to buy time on a Hadoop cluster on an hourly basis. It also works with your own Hadoop cluster. Some important features: * Run jobs on EMR, your own Hadoop cluster, or locally (for testing). * Write multi-step jobs (one map-reduce step feeds into the next) * Duplicate your production environment inside Hadoop * Upload your source tree and put it in your job's $PYTHONPATH * Run make and other setup scripts * Set environment variables (e.g. $TZ) * Easily install python packages from tarballs (EMR only) * Setup handled transparently by mrjob.conf config file * Automatically interpret error logs from EMR * SSH tunnel to hadoop job tracker on EMR * Minimal setup * To run on EMR, set $AWS_ACCESS_KEY_ID and $AWS_SECRET_ACCESS_KEY * To run on your Hadoop cluster, install simplejson and make sure $HADOOP_HOME is set. More info: * Install mrjob: python setup.py install * Documentation: http://packages.python.org/mrjob/ * PyPI: http://pypi.python.org/pypi/mrjob * Discussion: http://groups.google.com/group/mrjob * Development is hosted at github: http://github.com/Yelp/mrjob What's new? ------------------- v0.2.5, 2011-04-29 -- Hadoop input and output formats * Added hadoop_input/output_format options * You can now specify a custom Hadoop streaming jar (hadoop_streaming_jar) * extra args to hadoop now come before -mapper/-reducer on EMR, so that e.g. -libjar will work (worked in hadoop mode since v0.2.2) * hadoop mode now supports s3n:// URIs (Issue #53)

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PyPy 1.5 released
by Armin Rigo 30 Apr '11

30 Apr '11

====================== PyPy 1.5: Catching Up ====================== We're pleased to announce the 1.5 release of PyPy. This release updates PyPy with the features of CPython 2.7.1, including the standard library. Thus all the features of `CPython 2.6`_ and `CPython 2.7`_ are now supported. It also contains additional performance improvements. You can download it here: http://pypy.org/download.html What is PyPy? ============= PyPy is a very compliant Python interpreter, almost a drop-in replacement for CPython 2.7.1. It's fast (`pypy 1.5 and cpython 2.6.2`_ performance comparison) due to its integrated tracing JIT compiler. This release includes the features of CPython 2.6 and 2.7. It also includes a large number of small improvements to the tracing JIT compiler. It supports Intel machines running Linux 32/64 or Mac OS X. Windows is beta (it roughly works but a lot of small issues have not been fixed so far). Windows 64 is not yet supported. Numerous speed achievements are described on `our blog`_. Normalized speed charts comparing `pypy 1.5 and pypy 1.4`_ as well as `pypy 1.5 and cpython 2.6.2`_ are available on our benchmark website. The speed improvement over 1.4 seems to be around 25% on average. More highlights =============== - The largest change in PyPy's tracing JIT is adding support for `loop invariant code motion`_, which was mostly done by Håkan Ardö. This feature improves the performance of tight loops doing numerical calculations. - The CPython extension module API has been improved and now supports many more extensions. For information on which one are supported, please refer to our `compatibility wiki`_. - These changes make it possible to support `Tkinter and IDLE`_. - The `cProfile`_ profiler is now working with the JIT. However, it skews the performance in unstudied ways. Therefore it is not yet usable to analyze subtle performance problems (the same is true for CPython of course). - There is an `external fork`_ which includes an RPython version of the ``postgresql``. However, there are no prebuilt binaries for this. - Our developer documentation was moved to Sphinx and cleaned up. (click 'Dev Site' on http://pypy.org/ .) - and many small things :-) Cheers, Carl Friedrich Bolz, Laura Creighton, Antonio Cuni, Maciej Fijalkowski, Amaury Forgeot d'Arc, Alex Gaynor, Armin Rigo and the PyPy team .. _`CPython 2.6`: http://docs.python.org/dev/whatsnew/2.6.html .. _`CPython 2.7`: http://docs.python.org/dev/whatsnew/2.7.html .. _`our blog`: http://morepypy.blogspot.com .. _`pypy 1.5 and pypy 1.4`: http://bit.ly/joPhHo .. _`pypy 1.5 and cpython 2.6.2`: http://bit.ly/mbVWwJ .. _`loop invariant code motion`: http://morepypy.blogspot.com/2011/01/loop-invariant-code-motion.html .. _`compatibility wiki`: https://bitbucket.org/pypy/compatibility/wiki/Home .. _`Tkinter and IDLE`: http://morepypy.blogspot.com/2011/04/using-tkinter-and-idle-with-pypy.html .. _`cProfile`: http://docs.python.org/library/profile.html .. _`external fork`: https://bitbucket.org/alex_gaynor/pypy-postgresql

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Announce: Automated Testing on Macintosh (PyATOM) 0.9 released
by James Tatum 30 Apr '11

30 Apr '11

Hello, The PyATOM team is proud to announce the initial release of PyATOM. About PyATOM: Short for Automated Testing on Macintosh, PyATOM is the first Python library to fully enable GUI testing of Macintosh applications via the Apple Accessibility API. This library was created out of desperation. Existing tools such as using appscript to send messages to accessibility objects are painful to write and slow to use. PyATOM has direct access to the API. It's fast and easy to use to write tests. Changes in this release: It's the first public release, so none yet! Special thanks: The VMware Fusion automation team Nagappan Alagappan and the LDTP team Download source: https://github.com/pyatom/pyatom Documentation references: Documentation is still a work in progress. Read the README on the Github page for an introduction to PyATOM. Report bugs - https://github.com/pyatom/pyatom/issues To subscribe to PyATOM mailing lists, visit http://lists.pyatom.com/ IRC Channel - #pyatom on irc.freenode.net

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ANN: Sixth Pyggy Awards
by Gregory Ewing 30 Apr '11

30 Apr '11

Registrations are now open for the Sixth Pyggy Awards. Judging will be from 17-31 July 2011. http://pyggy.pyweek.org/ This time, entry is open to any Python-based game, not just PyWeek games, and not just games developed during PyWeek or Pyggy. So if you've had a Python game project on the back burner, you no longer have any excuse for not finishing it off! Get going! About the Pyggy Awards ---------------------- The Pyggy Awards is an occasion for game authors to show off games written in the Python programming language. Originally a follow-up event to the PyWeek competition, the Pyggy Awards is now open to any and all open-source Python-based games. The Pyggy Awards site provides a place to upload files and a forum for authors to try out and discuss each other's works in progress prior to the judging period. The intention is to foster a game development community where authors help each other out with playtesting and criticism. For more information, see the Pyggy Awards web site: http://pyggy.pyweek.org/ -- Greg

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PySide 1.0.2 - "80710a06": Python for Qt released!
by Renato Araujo Oliveira Filho 29 Apr '11

29 Apr '11

PySide 1.0.2 - "80710a06": Python for Qt released! ======================================================= The PySide team is proud to announce another minor release of PySide project. Major changes ============== This release essentially includes a lot of bug fixes (most of then missing functions). 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 C++ 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 [1], 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 ================== 781 Method "QPainter::drawPoints(const QPoint*, int)" missing 782 Method "QPainter::drawPolygon(const QPointF*, int, Qt::FillRule)" missing 783 Method "QPainter::drawPolyline(const QPoint*, int)" missing 784 Method "QPainter::drawRects(const QRect*, int)" missing 823 Shiboken doesn't support function call overloads 741 Method "qreal QTextLine::cursorToX(int *cursorPos, Edge edge = Leading) const" missing 742 Method "void QPrinter::getPageMargins(qreal*, qreal*, qreal*, qreal*, Unit) const" missing 753 Methods "void QTextDocument::undo(QTextCursor*)" missing 754 Methods "void QTextDocument::redo(QTextCursor*)" missing 755 Methods "void QInputContext::setFocusWidget(QWidget*)" missing 757 Constructor "QPixmap(const char* const[] xpm)" missing 688 The __iadd__ and __isub__ method is missing in QTextFrame.iterator 720 QByteArray prints itself wrong, on tp_print and tp_repr 722 float vs. qreal conflict in new-style-signals 739 Method "QTransform::map(qreal x, qreal y, qreal* tx, qreal* ty) const" missing 740 Method "QBitmap::fromData(QSize,const uchar*,QImage::Format)" missing 743 The removed method "QMatrix4x4::operator()(int, int)" should be replaced by an implementation of the sequence protocol 744 Method "void QGraphicsLayout::getContentsMargins(qreal*, qreal*, qreal*, qreal*) const" missing 745 Method "void QGraphicsLayoutItem::getContentsMargins(qreal*, qreal*, qreal*, qreal*) const" missing 746 Method "QFormLayout::getLayoutPosition(QLayout*,int*,QFormLayout::ItemRole*)const" missing 747 Method "QFormLayout::getWidgetPosition(QWidget*,int*,QFormLayout::ItemRole*)const" missing 748 Method "QFormLayout::getItemPosition(int,int*,QFormLayout::ItemRole*)const" missing 750 Method "QFontInfo QPainter::fontInfo() const" missing 751 Method "void QSplashScreen::repaint()" missing 752 Method "void QSplitter::getRange(int index, int* min, int* max) const" missing 756 Method "void QWidget::getContentsMargins(int*,int*,int*,int*) const" missing 758 Method "void QTextCursor::selectedTableCells(int*,int*,int*,int*)const" missing 759 Method "virtual void QPicture::setData(const char* data, uint size)" missing 764 Method "void QLayout::getContentsMargins(int*,int*,int*,int*) const" missing 773 Method QWebFrame.metaData is missing 774 Operator "QKeySequence::operator[](uint)const" missing 775 Operator "QKeySequence::operator QVariant() const" missing 778 Iterator protocol methods missing for QTreeWidgetItemIterator 787 ObjectDescription.fromIndex(int) is missing. 788 QIPv6Address.__getitem__ is missing. 819 QFileDialog.getSaveFileName does not accept a 'selectedFilter' argument. 843 Provide constants for Qt and PySide version (documentation) References ========== [1] http://qt.gitorious.org/pyside [2] http://developer.qt.nokia.com/wiki/PySideDownloads [3] http://bugs.openbossa.org/ [4] http://www.pyside.org/docs/pseps/psep-0001.html PySide Team

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PyCon Australia 2011: cfp closing soon!
by Ryan Kelly 29 Apr '11

29 Apr '11

Hi Everyone, A reminder that the Call for Proposals for PyCon Australia 2011 will be closing soon. We've had some great proposals so far, but there is still time left and program to fill. PyCon Australia is Australia's only conference dedicated exclusively to the Python programming language, and will be held at the Sydney Masonic Center over the weekend of August 20 and 21. See below for more information and updates on: 1. Call For Proposals 2. More Sponsors Announced Please pass this message on to those you feel may be interested. Call For Proposals ================== The deadline for proposal submission is the 2nd of May. That's only a few days away! We are looking for proposals for talks on all aspects of Python programming from novice to advanced levels; applications and frameworks, or how you have been involved in introducing Python into your organisation. We're especially interested in short presentations that will teach conference-goers something new and useful. Can you show attendees how to use a module? Explore a Python language feature? Package an application? We welcome first-time speakers; we are a community conference and we are eager to hear about your experience. If you have friends or colleagues who have something valuable to contribute, twist their arms to tell us about it! Please also forward this Call for Proposals to anyone that you feel may be interested. The earlier you submit your proposal, the more time we will have to review and give you feedback before the program is finalised. Speakers receive free registration for the conference, including a seat at the conference dinner. Don't miss out, submit your proposal today! http://pycon-au.org/cfp More Sponsors Announced ======================= We are delighted to announce that ComOps has joined as a Gold Sponsor. Thank you to the following companies for their continuing support of Python and for helping to make PyCon Australia 2011 a reality: Gold: Google <http://www.google.com.au/> Gold: Microsoft <http://www.microsoft.com.au/> Gold: ComOps <http://www.comops.com.au/> Silver: Anchor <http://anchor.com.au/> Silver: Enthought <http://www.enthought.com/> Silver: Python Software Foundation <http://www.python.org/psf/> Thanks also to Linux Australia, who provide the overarching legal and organisational structure for PyCon Australia. Ryan Kelly PyCon Australia 2011

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PyOhio (July 30-31) Call for Proposals; due June 3
by Catherine Devlin 28 Apr '11

28 Apr '11

PyOhio 2011, the fourth annual Python programming conference for Ohio and the surrounding region, will take place Saturday-Sunday, July 30-31, 2011 at the Ohio State University in Columbus, Ohio. A variety of activities are planned, including tutorials, scheduled talks, Lightning Talks, Open Spaces and Sprints. PyOhio invites all interested people to submit proposals for scheduled talks, tutorials, and panels. All topics of interest to Python programmers will be considered. Standard presentation slots will be 40 minutes plus a 10 minute question-and-answer period. PyOhio is a great venue to get word out about your favorite Python library and how you use it, talk about how Python is used in your company, or practice your speaking in front of a welcoming audience. PyOhio is especially interested in hosting a Beginner’s Track for those new to Python or new to programming in general. If your proposal would be suitable for inclusion in a Beginner’s Track, please indicate so. Organizers will work with speakers and instructors in the Beginner’s Track to help them coordinate their talks/tutorials into a smooth, coherent learning curve for new Python users. To ensure that you provide all necessary information, please use the submission template provided below. If organizing a panel, please confirm all panelists’ intention to participate before submitting your proposal. PyOhio may record presentations for later release over the web. Presenters will need to sign a release of recording rights to PyOhio; see http://wiki.python.org/moin/PyOhio/RecordingRelease All proposals should be emailed to cfp(a)pyohio.org for review. Please submit proposals by Friday, June 3, 2011. Accepted speakers will be notified by June 17. You can read more about the conference at http://pyohio.org. If you have questions about proposals, please email cfp(a)pyohio.org. You can also contact the PyOhio organizers at pyohio-organizers(a)python.org. The template can be downloaded here: http://bit.ly/lJAACo [pyohio.org] -- - Catherine http://catherinedevlin.blogspot.com

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[ANN] guidata v1.3.1
by Pierre.RAYBAUT＠CEA.FR 26 Apr '11

26 Apr '11

Hi all, I am pleased to announce that `guidata` v1.3.1 has been released. Note that the project has recently been moved to GoogleCode: http://guidata.googlecode.com Main changes since `guidata` v1.3.0: * gettext_helpers module was not working on Linux * bugfixes The `guidata` documentation with examples, API reference, etc. is available here: http://packages.python.org/guidata/ Based on the Qt Python binding module PyQt4, guidata is a Python library generating graphical user interfaces for easy dataset editing and display. It also provides helpers and application development tools for PyQt4. guidata also provides the following features: * guidata.qthelpers: PyQt4 helpers * guidata.disthelpers: py2exe helpers * guidata.userconfig: .ini configuration management helpers (based on Python standard module ConfigParser) * guidata.configtools: library/application data management * guidata.gettext_helpers: translation helpers (based on the GNU tool gettext) * guidata.guitest: automatic GUI-based test launcher * guidata.utils: miscelleneous utilities guidata has been successfully tested on GNU/Linux and Windows platforms. Python package index page: http://pypi.python.org/pypi/guidata/ Documentation, screenshots: http://packages.python.org/guidata/ Downloads (source + Python(x,y) plugin): http://guidata.googlecode.com Cheers, Pierre --- Dr. Pierre Raybaut CEA - Commissariat à l'Energie Atomique et aux Energies Alternatives

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[ANN] guiqwt v2.1.2
by Pierre.RAYBAUT＠CEA.FR 26 Apr '11

26 Apr '11

Hi all, I am pleased to announce that `guiqwt` v2.1.2 has been released. This release mainly fixes a critical bug when running the GUI-based test launcher (except from the test launcher itself, this bug had absolutely no impact on the library -- it was however considered critical as many regular users were not able to run the test launcher). Main changes since `guiqwt` v2.1.0: * added support for NaNs in image plot items (default behaviour: NaN pixels are transparents) * added "oblique averaged cross section" feature * bugfixes This version of `guiqwt` includes a demo software, Sift (for Signal and Image Filtering Tool), based on `guidata` and `guiqwt`: http://packages.python.org/guiqwt/sift.html Windows users may even download the portable version of Sift 0.23 to test it without having to install anything: http://code.google.com/p/guiqwt/downloads/detail?name=sift023_portable.zip The `guiqwt` documentation with examples, API reference, etc. is available here: http://packages.python.org/guiqwt/ Based on PyQwt (plotting widgets for PyQt4 graphical user interfaces) and on the scientific modules NumPy and SciPy, guiqwt is a Python library providing efficient 2D data-plotting features (curve/image visualization and related tools) for interactive computing and signal/image processing application development. When compared to the excellent module `matplotlib`, the main advantage of `guiqwt` is performance: see http://packages.python.org/guiqwt/overview.html#performances. But `guiqwt` is more than a plotting library; it also provides: * Helper functions for data processing: see the example http://packages.python.org/guiqwt/examples.html#curve-fitting * Framework for signal/image processing application development: see http://packages.python.org/guiqwt/examples.html * And many other features like making executable Windows programs easily (py2exe helpers): see http://packages.python.org/guiqwt/disthelpers.html guiqwt plotting features are the following: guiqwt.pyplot: equivalent to matplotlib's pyplot module (pylab) supported plot items: * curves, error bar curves and 1-D histograms * images (RGB images are not supported), images with non-linear x/y scales, images with specified pixel size (e.g. loaded from DICOM files), 2-D histograms, pseudo-color images (pcolor) * labels, curve plot legends * shapes: polygon, polylines, rectangle, circle, ellipse and segment * annotated shapes (shapes with labels showing position and dimensions): rectangle with center position and size, circle with center position and diameter, ellipse with center position and diameters (these items are very useful to measure things directly on displayed images) curves, images and shapes: * multiple object selection for moving objects or editing their properties through automatically generated dialog boxes (guidata) * item list panel: move objects from foreground to background, show/hide objects, remove objects, ... * customizable aspect ratio * a lot of ready-to-use tools: plot canvas export to image file, image snapshot, image rectangular filter, etc. curves: * interval selection tools with labels showing results of computing on selected area * curve fitting tool with automatic fit, manual fit with sliders, ... images: * contrast adjustment panel: select the LUT by moving a range selection object on the image levels histogram, eliminate outliers, ... * X-axis and Y-axis cross-sections: support for multiple images, average cross-section tool on a rectangular area, ... * apply any affine transform to displayed images in real-time (rotation, magnification, translation, horizontal/vertical flip, ...) application development helpers: * ready-to-use curve and image plot widgets and dialog boxes * load/save graphical objects (curves, images, shapes) * a lot of test scripts which demonstrate guiqwt features guiqwt has been successfully tested on GNU/Linux and Windows platforms. Python package index page: http://pypi.python.org/pypi/guiqwt/ Documentation, screenshots: http://packages.python.org/guiqwt/ Downloads (source + Python(x,y) plugin): http://guiqwt.googlecode.com Cheers, Pierre --- Dr. Pierre Raybaut CEA - Commissariat à l'Energie Atomique et aux Energies Alternatives

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Python-announce-list April 2011