参考

https://github.com/PyMySQL/PyMySQL

• 英文说明文档
  https://pymysql.readthedocs.io/en/latest/
  ```

#### 超时

https://www.jianshu.com/p/d4f444cb0ce0

pymysql.connect(….,connect_timeout=600)

read_timeout=None,write_timeout=None
```

参考：https://blog.csdn.net/diqiuyi7777/article/details/108616466