从matplotlib.animation导入FuncAnimation时发生错误

Question

我无法从matplotlib.animation导入FuncAnimation。当我尝试这样做，我得到的错误：

ValueError: insecure string pickle

我使用matplotlib 1.5.1，Python 2.7版，Mac OSX上10.11.3，在Jupyter笔记本。

Answer 1

啊，我发现这个问题（为我安装）：

brew install imagemagick 

我挖成的错误蟒蛇是出...

$ python -c "import matplotlib.animation" 
Traceback (most recent call last): 
    File "<string>", line 1, in <module> 
    File "/usr/local/lib/python2.7/site-packages/matplotlib/animation.py", line 578, in <module> 
    class ImageMagickWriter(MovieWriter, ImageMagickBase): 
    File "/usr/local/lib/python2.7/site-packages/matplotlib/animation.py", line 74, in wrapper 
    if writerClass.isAvailable(): 
    File "/usr/local/lib/python2.7/site-packages/matplotlib/animation.py", line 277, in isAvailable 
    creationflags=subprocess_creation_flags) 
    File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 710, in __init__ 
    errread, errwrite) 
    File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1334, in _execute_child 
    child_exception = pickle.loads(data) 
    File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py", line 1388, in loads 
    return Unpickler(file).load() 
    File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py", line 864, in load 
    dispatch[key](self) 
    File "/usr/local/Cellar/python/2.7.11/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 
$ 

，发现正在使用的ImageMagick。鉴于在这个线程的意见... https://github.com/matplotlib/matplotlib/issues/5314#issuecomment-225368342 ...关于丢失的依赖关系，我安装ImageMagick和问题消失了。