清华镜像安装及wheel方法安装，安装mysqlclient

pip install -i pypi.tuna.tsinghua.edu.cn/simple+名称
举例
pip install -i pypi.tuna.tsinghua.edu.cn/simple numpy

pip install wheel
例如安装 mysqlclient

pip install C:\Users\DELL\Downloads\mysqlclient-2.1.0-cp37-cp37m-win_amd64.whl

(tutorial_env) (base) D:\python_env\tutorial_env\Scripts>
pip install C:\Users\DELL\Downloads\mysqlclient-2.1.0-cp37-cp37m-win_amd64.whl
Processing c:\users\dell\downloads\mysqlclient-2.1.0-cp37-cp37m-win_amd64.whl
Installing collected packages: mysqlclient
Successfully installed mysqlclient-2.1.0