安裝
brew install python3
查看安裝的版本
python3 —version或python3 -V
安裝tensorflow
pip3 install tensorflow
最後提示文字：
Installing collected packages: tensorflow-estimator, six, numpy, keras-preprocessing, gast, grpcio, setuptools, markdown, absl-py, werkzeug, protobuf, tensorboard, astor, google-pasta, termcolor, wrapt, h5py, keras-applications, tensorflow
Found existing installation: setuptools 39.2.0
Uninstalling setuptools-39.2.0:
Successfully uninstalled setuptools-39.2.0
Successfully installed absl-py-0.7.1 astor-0.8.0 gast-0.2.2 google-pasta-0.1.7 grpcio-1.21.1 h5py-2.9.0 keras-applications-1.0.8 keras-preprocessing-1.1.0 markdown-3.1.1 numpy-1.16.4 protobuf-3.8.0 setuptools-41.0.1 six-1.12.0 tensorboard-1.14.0 tensorflow-1.14.0 tensorflow-estimator-1.14.0 termcolor-1.1.0 werkzeug-0.15.4 wrapt-1.11.2