SqlAlchemy操作（二）

SQLALchemy初始化链接数据库

1. 数据库配置.

https://www.cnblogs.com/mengbin0546/p/10124560.html

2.  python端操作.

一、  代码：

from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column, Integer, String
from sqlalchemy.orm import sessionmaker
from sqlalchemy import create_engine

engine = create_engine("mysql+pymysql://root:[email protected]:3306/db1", max_overflow=5)

DBSession = sessionmaker(bind=engine)
session = DBSession()

BaseModle = declarative_base()
class User(BaseModle):
    __tablename__ = ‘users‘
    id = Column(Integer, primary_key=True)
    name = Column(String(50))

class Session(BaseModle):
    __tablename__ = "session"
    id = Column(Integer, primary_key=True)
    user = Column(String(10), index=True)
    ip = Column(String(10))

# 寻找Base的所有子类，按照子类的结构在数据库中生成对应的数据表信息
BaseModle.metadata.create_all(engine)
session.commit() #提交

执行后在数据库中查看：

MariaDB [db1]> show tables;
+---------------+
| Tables_in_db1 |
+---------------+
| mengbin       |
| session       |
| users         |
+---------------+
3 rows in set (0.00 sec)

原文地址：https://www.cnblogs.com/mengbin0546/p/10145481.html