在OSX，Anaconda上导入matplotlib.pyplot失败

Question

我看过其他文章，但我无法纠正这个问题。我对Python很新。 我的问题：

which -a python
/Users/user/anaconda/bin/python
/usr/bin/python

which -a jupyter
/Users/user/anaconda/bin/jupyter
/usr/local/bin/jupyter

sys.path
['',
 '/Users/user/anaconda/lib/python27.zip',
 '/Users/user/anaconda/lib/python2.7',
 '/Users/user/anaconda/lib/python2.7/plat-darwin',
 '/Users/user/anaconda/lib/python2.7/plat-mac',
 '/Users/user/anaconda/lib/python2.7/plat-mac/lib-scriptpackages',
 '/Users/user/anaconda/lib/python2.7/lib-tk',
 '/Users/user/anaconda/lib/python2.7/lib-old',
 '/Users/user/anaconda/lib/python2.7/lib-dynload',
 '/Users/user/anaconda/lib/python2.7/site-packages/runipy-0.1.1-py2.7.egg',
 '/Users/user/anaconda/lib/python2.7/site-packages/setuptools-20.7.0-py2.7.egg',
 '/Users/user/anaconda/lib/python2.7/site-packages',
 '/Users/user/anaconda/lib/python2.7/site-packages/PIL',
 '/Users/user/anaconda/lib/python2.7/site-packages/Sphinx-1.2.3-py2.7.egg',
 '/Users/user/anaconda/lib/python2.7/site-packages/IPython/extensions',
 '/Users/user/.ipython']

更多信息： 我在OSX上运行Jupyter Notebook，但是当我从终端I加载Python时也收到同样的错误。

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