sqlalchemy连接数据库

# 导入:
from sqlalchemy import Column, String, create_engine
from sqlalchemy.orm import sessionmaker
from sqlalchemy.ext.declarative import declarative_base

# 创建对象的基类:
Base = declarative_base()

# 定义User对象:
class User(Base):
    # 表的名字:
    __tablename__ = 'user'

    # 表的结构:
    id = Column(String(20), primary_key=True)
    name = Column(String(20))

# 初始化数据库连接:
engine = create_engine('sqlite:///foo.db', echo=True)

# 创建表
Base.metadata.create_all(engine)

# 创建session对象:
session = DBSession()
# 创建新User对象:
new_user = User(id='5', name='Bob')
# 添加到session:
session.add(new_user)
# 提交即保存到数据库:
session.commit()
# 关闭session:
session.close()

参考

https://www.jianshu.com/p/6d3ec5851f3a
https://www.liaoxuefeng.com/wiki/0014316089557264a6b348958f449949df42a6d3a2e542c000/0014320114981139589ac5f02944601ae22834e9c521415000