$ pip install pymysql
Requirement already satisfied: PyMySQL in /usr/local/lib/python3.6/site-packages

上面可见已经安装成功

但是引入的时候会报错：

ModuleNotFoundError: No module named 'pymysql'

解决方法：

在uwsgi.ini中添加

```
pythonpath=/usr/local/lib/python3.6/dist-packages
```