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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Sprint] macosx backend doesn't respond to key_press_events (sometimes)","articleBody":"For some combinations of virtualenvs, distributions, python version, and virtual environments, the macosx backend does not respond to `key_press_events`.\n\nI can confirm failures with mpl 1.2.1, OSX 10.8.3, anaconda v1.4.6.\nFrom the thread on matplotlib-users, Scott Lasley has failures with:\nmpl 1.2.1/1.3.0r2, OSX 10.8, python3.3.2 (framework python.org in virutalenvs)\nbut\nmpl 1.4.x not installed in a virtualenv works.\n\nThe following script ought to respond to key_press_events.\n\n```\nimport pylab as plt\nplt.switch_backend('macosx')\n# plt.switch_backend('tkAgg')\n\ndef print_event(event):\n    print event\n\nfig = plt.figure()\nfig.canvas.mpl_connect('key_press_event', print_event)\nplt.show()\n```\n\n@mdboom edit: Adding \"sprint\" to the title, since I overheard a lot of work being done on this there.\n","author":{"url":"https://github.com/mrterry","@type":"Person","name":"mrterry"},"datePublished":"2013-06-10T03:00:01.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":11},"url":"https://github.com/2120/matplotlib/issues/2120"}