Flask-SQLALchemy

from sqlalchemy.ext.declarative import declarative_base
Base = declarative_base()
class Users(Base):

from sqlalchemy.orm import sessionmaker
from sqlalchemy import create_engine
engine = create_engine('mysql+pymysql://<账号>:<密码>@localhost:3306/plus2', max_overflow=5)
session=sessionmaker(engine)()
Base.metadata.create_all(engine)         #创建表    
Base.metadata.drop_all(engine)             #删除表

https://blog.csdn.net/aimill/article/details/80711685

Flask-SQLALchemy

原文：https://www.cnblogs.com/plusUltra/p/10583712.html