When I run a file that uses matplolib animation, I keep getting this error. Using OS X, Python 2.7, installed Python from python.org then used homebrew. Matplotlib install from pip. #6348
Description
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- Matplotlib version, Python version and Platform (Windows, OSX, Linux ...)
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that demonstrates the issue i.e a small piece of code which reproduces the issue
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note where it used to work.
Error:
Traceback (most recent call last):
File "HOstates.py", line 20, in <module>
import matplotlib.animation as animation
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/animation.py", line 365, in <module>
class FFMpegWriter(MovieWriter, FFMpegBase):
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/animation.py", line 49, in wrapper
if writerClass.isAvailable():
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/animation.py", line 239, in isAvailable
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 710, in __init__
errread, errwrite)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1334, in _execute_child
child_exception = pickle.loads(data)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py", line 1388, in loads
return Unpickler(file).load()
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py", line 864, in load
dispatch[key](self)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py", line 972, in load_string
raise ValueError, "insecure string pickle"
ValueError: insecure string pickle