【2019.05】【解决】python3.7安装tensorflow提示：Could not find a version that satisfies the requirement tensorflow (from versions: )
Could not find a version that satisfies the requirement tensorflow (from versions: )
No matching distribution found for tensorflow
https://download.lfd.uci.edu/pythonlibs/u2hcgva4/tensorflow-1.9.0-cp37-cp37m-win_amd64.whl
下载该文件，然后在该文件路径下执行下面命令即可安装成功：
pip install tensorflow-1.9.0-cp37-cp37m-win_amd64 .whl