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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Qt4 backend using unichr() in python3","articleBody":"I get a NameError exception (see backtrace below) when trying to use key\nevents in matplotlib (master branch rev:\ne322d5f5bb024bbec44d3ba76da1bc16bf52af9c), python 3.4.1, and pyqt 4.10.\nThis has been posted to the matplotlib-users ml: http://thread.gmane.org/gmane.comp.python.matplotlib.general/34364\n\n``` python\nNameError                                 Traceback (most recent call last)\n/home/jscandal/sw/matplotlib/matplotlib/lib/matplotlib/backends/backend_qt4.py\nin\nkeyReleaseEvent(self=\u003cmatplotlib.backends.backend_qt4agg.FigureCanvasQTAgg\nobject\u003e, event=\u003cPyQt4.QtGui.QKeyEvent object\u003e)\n    308 \n    309     def keyReleaseEvent(self, event):\n--\u003e 310         key = self._get_key(event)\n        key = undefined\n        self._get_key = \u003cbound method FigureCanvasQTAgg._get_key of\n\u003cmatplotlib.backends.backend_qt4agg.FigureCanvasQTAgg object at 0x7f0393412948\u003e\u003e\n        event = \u003cPyQt4.QtGui.QKeyEvent object at 0x7f0393507a68\u003e\n    311         if key is None:\n    312             return\n\n/home/jscandal/sw/matplotlib/matplotlib/lib/matplotlib/backends/backend_qt4.py\nin _get_key(self=\u003cmatplotlib.backends.backend_qt4agg.FigureCanvasQTAgg\nobject\u003e, event=\u003cPyQt4.QtGui.QKeyEvent object\u003e)\n    363                 return None\n    364 \n--\u003e 365             key = unichr(event_key)\n        key = undefined\n        global unichr = undefined\n        global event_key = undefined\n    366             # qt delivers capitalized letters.  fix capitalization\n    367             # note that capslock is ignored\n\nNameError: name 'unichr' is not defined\n```\n","author":{"url":"https://github.com/jorgesca","@type":"Person","name":"jorgesca"},"datePublished":"2014-06-05T21:55:10.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/3117/matplotlib/issues/3117"}