Python操作MYSQL数据库！

一、数据库创建表格

from sqlalchemy import create_engine  #  导入引擎
from sqlalchemy import Column,Integer,CHAR    #  导入数据库基本模块
from sqlalchemy.ext.declarative import declarative_base   #  导入基类
link = "mysql+pymysql://root:123456@localhost:3306/aaa?charset=utf8"
engine = create_engine(link)     #  创建数据库引擎
Base = declarative_base()
class Teacher(Base):
    __tablename__ = 'teacher'     #  数据表名字
id = Column(Integer,primary_key=True,nullable=False)    #   id 字段
name = Column(CHAR(20),nullable=False)    #  name  字段
Base.metadata.create_all(bind=engine)

 

二、数据库追加内容

 

from sqlalchemy import create_engine
from sqlalchemy import Column,Integer,CHAR
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker   #   导入会话
link = "mysql+pymysql://root:123456@localhost:3306/aaa?charset=utf8"
engine = create_engine(link)

Session = sessionmaker(bind=engine)   #  创建会话类
session = Session()      #  实例化会话
Base = declarative_base()

class Books(Base):
    __tablename__ = 'book'
编号 = Column(Integer,primary_key=True,nullable=False)
    书名 = Column(CHAR(20),nullable=False)
    作者 = Column(CHAR(20), nullable=False)
    价格 = Column(CHAR(20), nullable=False)
    出版社 = Column(CHAR(20), nullable=False)
    数量 = Column(CHAR(20), nullable=False)
    def Add_info(self):
        add_info = Books(编号=1,书名="计算机基础教程",作者="吴昊",价格=35,出版社="北京邮电出版社",数量=8)
        session.add(add_info)   #  添加会话
session.commit()     #  提交会话，执行到数据库
session.close()     #    关闭会话
if __name__ == '__main__':
    books = Books()
    books.Add_info()
    # Base.metadata.create_all(bind=engine)