【ubuntu14.04】【tensorflow安装】matplotlib 1.3.1 requires tornado, which is not installed.

问题：

matplotlib 1.3.1 requires tornado, which is not installed.
Installing collected packages: numpy, six, enum34, futures, grpcio, h5py, keras-applications, markdown, werkzeug, protobuf, absl-py, tensorboard, termcolor, gast, funcsigs, pbr, mock, tensorflow-estimator, backports.weakref, astor, keras-preprocessing, tensorflow
  Found existing installation: numpy 1.8.2
Cannot uninstall 'numpy'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
/usr/local/lib/python2.7/dist-packages/pip/_vendor/urllib3/util/ssl_.py:150: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
  InsecurePlatformWarning
 

分析：

版本过低

 

 

解决：

升级版本

sudo pip install numpy --ignore-installed numpy