peewee.ImproperlyConfigured: MySQL driver not installed!

在新的环境做部署的项目中使用了peewee，运行后报错

peewee.ImproperlyConfigured: MySQL driver not installed!

peewee自己竟然不去安装驱动，那就自己安装

解决

pip install pymysql

参考: https://github.com/coleifer/peewee/issues/1569