tensorflow2.0安装

版本：

python3.5

Anaconda 4.2.0

tensorflow2.0 cpu版本

1、安装命令

pip3 install tensorflow==2.0.0.0a0 -i  https://pypi.tuna.tsinghua.edu.cn/simple/ # -i表示重新指定镜像，提高下载速度

2、报错以及解决方法

（1）报错： “Cannot remove entries from nonexistent file c:\program files\anaconda3\lib\site-packages\easy-install.pth”

  解决方案：

pip install --upgrade --ignore-installed setuptools

（2）报错：“Cannot uninstall 'Werkzeug'. 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”、、

  解决方案：

pip3 install  --ignore-installed Werkzeug tensorflow==2.0.0.0a0 -i  https://pypi.tuna.tsinghua.edu.cn/simple/

3、成功安装后 import tensorflow as tf 报警：“ FutureWarning: Passing (type, 1) or '1type' as a synonym of type is deprecated; in a future version of numpy, it will be understood as (type, (1,)) / '(1,)type'”

  原因：numpy 的版本过低或者过高都会出现警告

  解决方案：  

# 需要先卸载现有的numpy，并重新指定1.16.4版本的numpy
pip3 uninstall numpy
pip3 install numpy==1.16.4 -i  https://pypi.tuna.tsinghua.edu.cn/simple/