Windows安装Python 3

下载python for windows安装包：

https://www.python.org/downloads/

为了兼容tensorflow，这是选用的是版本3.8.8

升级pip:

python3 -m pip install --upgrade pip

安装opencv:

pip3 install -i https://pypi.tuna.tsinghua.edu.cn/simple opencv-python

安装tensorflow:：

pip3 install -i https://pypi.tuna.tsinghua.edu.cn/simple tensorflow