python连接mysql数据库示例(做增删改操作)

一、相关代码
数据库配置类 MysqlDBConn.py

代码如下:
#encoding=utf-8
'''
Created on 2012-11-12

Mysql Conn连接类
'''

import MySQLdb

class DBConn:

    conn = None

    #建立和数据库系统的连接
    def connect(self):
        self.conn = MySQLdb.connect(host="localhost",port=3306,user="house", passwd="house" ,db="house",charset="utf8")

    #获取操作游标
    def cursor(self):
        try:
            return self.conn.cursor()
        except (AttributeError, MySQLdb.OperationalError):
            self.connect()
            return self.conn.cursor()

    def commit(self):
        return self.conn.commit()

    #关闭连接
    def close(self):
        return self.conn.close()

MysqlDemo.py类

代码如下:
#encoding=utf-8
'''
Created on 2012-11-12

@author: Steven

Mysql操作Demo
Done:创建表，删除表，数据增、删、改，批量插入
'''
import MysqlDBConn

dbconn = MysqlDBConn.DBConn()

def process():
    #建立连接
    dbconn.connect()
    #删除表
    dropTable()
    #创建表
    createTable()
    #批量插入数据
    insertDatas()
    #单条插入
    insertData()
    #更新数据
    updateData()
    #删除数据
    deleteData()
    #查询数据
    queryData()
    #释放连接
    dbconn.close()

def insertDatas():
    sql = "insert into lifeba_users(name, realname, age) values(%s, %s, %s)"
    tmp = (('steven1', '测试1',26), ('steven2', '测试2',25))
    executemany(sql, tmp)

def updateData():
    sql = "update lifeba_users set realname = '%s' where name ='steven1'"%("测试1修改")
    execute(sql)

def deleteData():
    sql = "delete from lifeba_users where id=2"
    execute(sql)

def queryData():
    sql = "select * from lifeba_users"
    rows = query(sql)
    printResult(rows)

def insertData():
    sql = "insert into lifeba_users(name, realname, age) values('%s', '%s', %s)"%("steven3","测试3","26")