python安装MySQLdb需要ssl，出错，原因如地址：
https://stackoverflow.com/questions/46967488/getting-error-403-while-installing-package-with-pip
python的mysql库，代替使用PyMySQL，地址：
https://github.com/PyMySQL/PyMySQL
pip install git+https://github.com/PyMySQL/PyMySQL
python安装MySQLdb需要ssl，出错，原因如地址：
https://stackoverflow.com/questions/46967488/getting-error-403-while-installing-package-with-pip
python的mysql库，代替使用PyMySQL，地址：
https://github.com/PyMySQL/PyMySQL
pip install git+https://github.com/PyMySQL/PyMySQL