mac上默認裝有python，先看一下python的版本，

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python3 以上的版本默認有pip ，所以2.7需要手動安裝pip，安裝命令

sudo easy_install pip

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tensorflow1.2以上版本macos上不支持gpu，現在tensorflow1.8已經發布了。

安裝cpu版本：

pip install tensorflow

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失敗了：

Collecting html5lib==0.9999999 (from tensorboard<1.9.0,>=1.8.0->tensorflow)
Using cached https://files.pythonhosted.org/packages/ae/ae/bcb60402c60932b32dfaf19bb53870b29eda2cd17551ba5639219fb5ebf9/html5lib-0.9999999.tar.gz
matplotlib 1.3.1 requires nose, which is not installed.
matplotlib 1.3.1 requires tornado, which is not installed.
Installing collected packages: numpy, pbr, funcsigs, six, mock, enum34, wheel, astor, backports.weakref, termcolor, gast, protobuf, futures, grpcio, absl-py, markdown, html5lib, bleach, werkzeug, tensorboard, tensorflow
Found existing installation: numpy 1.8.0rc1
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.
sniper:~ chris$ cd /usr/lib/python2.7/

貌似少一些依賴關系、還有不兼容的問題
先執行兩命令看看

sudo easy_install nose
sudo easy_install tornado

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再解決兼容問題：
在終端運行：

sudo pip install --ignore-installed numpy

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完成后運行

pip install tensorflow 

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執行

 pip install --user tensorflow

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按照錯誤提示命令執行,但是依然會報錯 ,原因是沒有權限.

所以執行:

sudo pip install --upgrade pip

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最后再執行

pip install --user tensorflow

驗證一下:

import tensorflow as tf
hello=tf.constant("hello tensorflow")
sess=tf.Session()
print(sess.run(hello))

沒毛病

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