from mydb import MyDB # 实例化数据库对象 database = MyDB(h='localhost', u='root', p='123123', db='demo1') # 插入数据 sql = 'insert into user(id,name) values(30,"祎")' print(database.change(sql)) # 定义sql语句 sql = 'select * from user' print(database.query(sql))