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ImportError: No module named matplotlib.pyplot

sklearn的网站上不去,准备编译一下在github中的文档:

$ cd scikit-learn-master/doc
$ make html



出现以下错误:

Exception occurred:
  File "/home/sunlt/Downloads/scikit-learn-master/doc/sphinxext/gen_rst.py", line 850, in generate_file_rst
    import matplotlib.pyplot as plt
ImportError: No module named matplotlib.pyplot
The full traceback has been saved in /tmp/sphinx-err-7pCJ3k.log, if you want to report the issue to the developers.



用pip安装:
$ sudo pip install matplotlib



依然是这个错误,

使用下面的命令安装,就没有问题了:
$ sudo apt-get install python-matplotlib







ImportError: No module named matplotlib.pyplot