mysql新版本的问题，旧的驱动不支持新的mysql的验证方式引起的。需要更新对应的PyMySQL版本到最新或者较新：
pip install PyMySQL -i https://pypi.tuna.tsinghua.edu.cn/simple some-package
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
Requirement already satisfied: PyMySQL in ./venv/lib/python3.7/site-packages (0.7.11)
Requirement already satisfied: some-package in ./venv/lib/python3.7/site-packages (0.1)
(venv) ➜ spug_api git:(master) ✗ pip install PyMySQL==0.9.3 -i https://pypi.tuna.tsinghua.edu.cn/simple some-package
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
Collecting PyMySQL==0.9.3
Using cached https://pypi.tuna.tsinghua.edu.cn/packages/ed/39/15045ae46f2a123019aa968dfcba0396c161c20f855f11dea6796bcaae95/PyMySQL-0.9.3-py2.py3-none-any.whl
Requirement already satisfied: some-package in ./venv/lib/python3.7/site-packages (0.1)
Installing collected packages: PyMySQL
Found existing installation: PyMySQL 0.7.11
Uninstalling PyMySQL-0.7.11:
Successfully uninstalled PyMySQL-0.7.11
Successfully installed PyMySQL-0.9.3
