离线安装
https://pypi.org/project/tensorflow/0.12.0rc0/#history,此为所有CPU版本tensorflow下载链接
https://pypi.org/project/tensorflow-gpu/1.4.0/#history,此为所有GPU版本tensorflow下载链接
如果是windows+python2.7下tensorflow1.8.0的安装，下载whl文件后pip install即可
https://github.com/fo40225/tensorflow-windows-wheel
在线安装
安装指定版本的tf
pip/conda install tensorflow-gpu==1.9.0
详细步骤具体参考https://blog.csdn.net/Ouyangjianxiu/article/details/78143700
