從matplotlib.animation導入FuncAnimation時發生錯誤

Question

我無法從matplotlib.animation導入FuncAnimation。當我嘗試這樣做，我得到的錯誤：

ValueError: insecure string pickle

我使用matplotlib 1.5.1，Python 2.7版，Mac OSX上10.11.3，在Jupyter筆記本。

Answer 1

啊，我發現這個問題（爲我安裝）：

brew install imagemagick 

我挖成的錯誤蟒蛇是出...

$ 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 
$ 

，發現正在使用的ImageMagick。鑑於在這個線程的意見... https://github.com/matplotlib/matplotlib/issues/5314#issuecomment-225368342 ...關於丟失的依賴關係，我安裝ImageMagick和問題消失了。