Mailman 3 March 2013 - Edu-sig

Re: [Edu-sig] Edu-sig Digest, Vol 116, Issue 4
by Lee Harr March 17, 2013

March 17, 2013

> Lee, if you are looking for a classroom teacher to try out pynguin in > the classroom, sign me up! I'll have it installed in my lab on > Thursday, when I return, in any case. It rocks! Thanks! Glad to hear it! > Now a question: how difficult would it be to get pynguin to output svg images? Turns out with QGraphicsScene it's actually pretty easy. Try replacing the MainWindow.export() method in mw.py with this: def export(self): for pynguin in self.pynguins: pynguin.gitem.hide() from PyQt4 import QtSvg svgen = QtSvg.QSvgGenerator() svgen.setFileName('test.svg') svgen.setSize(QtCore.QSize(500, 500)) svgen.setViewBox(QtCore.QRect(-250, -250, 500, 500)) svgen.setTitle('Test SVG Output') svgen.setDescription('PyQt SVG Generator') painter = QtGui.QPainter(svgen) self.scene.render(painter) painter.end() for pynguin in self.pynguins: pynguin.gitem.show() It's just a proof-of-concept, but it definitely works. Thanks for the suggestion. I will look at adding that option for the next release.

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[ANNC] pynguin-0.13 python turtle graphics application now uses python 3
by Lee Harr March 17, 2013

March 17, 2013

Pynguin is a python-based turtle graphics application. It combines an editor, interactive interpreter, and graphics display area. It is meant to be an easy environment for introducing some programming concepts to beginning programmers. http://pynguin.googlecode.com/ This release ports Pynguin to Python 3. Pynguin is tested with Python 3.2.3 and PyQt 4.9.3 and will use Pygments syntax highlighting if available. Pynguin is released under GPLv3. Changes in pynguin-0.13: Now uses (requires) Python 3 - Tested with Python 3.2.3 Important fixes - New approach for threading of user code - should provide safer, more reliable, termination of user code - can now reliably stop code like ... while 1: pass - Preserves fill state and color when changing avatar Other fixes - Preserves name label when changing avatar - Tries harder to go as fast as possible for "instant" setting - throttles back on CPU when not running user code Pynguin API - Logo-mode coordinates and angles now available - Switch mode using Pynguin -> Mode -> Logo - or create new instance with mlogo=ModeLogo() - Python turtle-mode coordinates and angles now available - Switch mode using Pynguin -> Mode -> Turtle - or create new instance with mturtle=ModeTurtle() - xy(x, y) re-uses goto(x, y) code - xyh() uses xy() and h() to retrieve values - color() takes an optional alpha channel value for transparency - color('ralpha') chooses a random color with random alpha - Each pynguin's speed can now be set individually Canvas - Added a dialog for pen, background, and fill default colors - sets these colors on program startup - uses these colors for reset() - also used when adding new pynguins - Can now track any pynguin - Can zoom to fit entire drawing UI - Added new Pynguin menu for avatar and mode selection - Added alpha value selector to pen and fill color dialogs Integrated Editor Integrated Console Examples - All ported to Python 3 - Added examples using colors with alpha channel values - Added finish line to horserace

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post Education Summit at Pycon
by kirby urner March 15, 2013

March 15, 2013

Greetings from Pycon 2013 in Santa Clara. We enjoyed a day long Education Summit on Pi Day today (3/14) an pun (py vs pi) that did not go unnoticed. The program featured a keynote by Walter Bender, founder of Sugarlabs, followed by an unconference of three consecutive sessions and seven lightning talks, culled from a longer list of proposals by public voting process. Topics were wide-ranging, with quite a bit of focus on IPython, IPython Notebooks and IPython Blocks. The Scratch-like graphical Turtle Art program that runs on the XO (or in an XO VM) was another focus of attention. Guido joined us and participated actively in the Q&A during one of the panels. Thanks to all the organizers and sponsors, Naomi in particular, for making this happen. Kirby A first blog post: http://controlroom.blogspot.com/2013/03/pycon-2013.html (cluttered with autobiographical extranea)

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