表结构:
代码:
代码语言:javascript
复制#Author Kang
import sqlalchemy
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column,Integer,String
from sqlalchemy.orm import sessionmaker
#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:
userid = Column(Integer,primary_key=True)
username = Column(String(20))
age = Column(Integer)
department = Column(String(20))
#初始化数据库连接
engine = create_engine("mysql pymysql://kang:123456@10.3.152.35/test",encoding="utf-8")
#创建session类型
DBSession = sessionmaker(bind=engine)
#创建session对象
session = DBSession()
#更新语句方式为,先查询数据出来,然后直接更改就可以
#查出用户名为"MK"的,然后赋于新的值
user_info = session.query(User).filter(User.username.like("MK")).first()
user_info.username="MingKang"
session.commit()