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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"ValueError: insecure string pickle","articleBody":"When I run `python -c \"import matplotlib.animation\"`, I get:\n\n```\nTraceback (most recent call last):\n  File \"\u003cstring\u003e\", line 1, in \u003cmodule\u003e\n  File \"/usr/local/lib/python2.7/site-packages/matplotlib/animation.py\", line 454, in \u003cmodule\u003e\n    class AVConvWriter(AVConvBase, FFMpegWriter):\n  File \"/usr/local/lib/python2.7/site-packages/matplotlib/animation.py\", line 66, in wrapper\n    if writerClass.isAvailable():\n  File \"/usr/local/lib/python2.7/site-packages/matplotlib/animation.py\", line 266, in isAvailable\n    creationflags=subprocess_creation_flags)\n  File \"/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py\", line 710, in __init__\n    errread, errwrite)\n  File \"/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py\", line 1334, in _execute_child\n    child_exception = pickle.loads(data)\n  File \"/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py\", line 1382, in loads\n    return Unpickler(file).load()\n  File \"/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py\", line 858, in load\n    dispatch[key](self)\n  File \"/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py\", line 966, in load_string\n    raise ValueError, \"insecure string pickle\"\nValueError: insecure string pickle\n```\n\nI'm using Python 2.7.10, matplotlib 1.4.3. Can you help?\n","author":{"url":"https://github.com/corradio","@type":"Person","name":"corradio"},"datePublished":"2015-10-25T11:38:51.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":24},"url":"https://github.com/5314/matplotlib/issues/5314"}