Python操作MySQL

#!/usr/bin/env python 
#coding:utf-8

import  MySQLdb
import  config

class MySQLHelper(object):
    def __init__(self):
        self.conn=config.conn_dict

    def get_one(self,sql,params):
        conn = MySQLdb.connect(**self.conn)
        cur = conn.cursor(cursorclass=MySQLdb.cursors.DictCursor)
        retCount = cur.execute(sql,params)
        data = cur.fetchone()
        cur.close()
        conn.close()
        return data

    def get_many(self,sql,params):
        conn = MySQLdb.connect(**self.conn)
        cur = conn.cursor(cursorclass=MySQLdb.cursors.DictCursor)
        retCount = cur.execute(sql,params)
        data = cur.fetchall()
        cur.close()
        conn.close()
        return data

    def insert_one(self,sql,params):
        conn = MySQLdb.connect(**self.conn)
        cur = conn.cursor()
        cur.execute(sql, params)
        conn.commit()
        cur.close()
        return u'插入数据库成功'

    def insert_many(self,sql,params):
        conn = MySQLdb.connect(**self.conn)
        cur = conn.cursor()
        cur.executemany(sql, params)
        conn.commit()
        cur.close()
        return u'批量插入数据库成功'

    def update_one(self,sql,params):
        conn = MySQLdb.connect(**self.conn)
        cur = conn.cursor(cursorclass=MySQLdb.cursors.DictCursor)
        ret = cur.execute(sql, params)
        conn.commit()
        cur.close()
        conn.close()
        return u'更新数据库成功'

    def delete_one(self,sql,params):
        conn = MySQLdb.connect(**self.conn)
        cur = conn.cursor(cursorclass=MySQLdb.cursors.DictCursor)
        ret = cur.execute(sql, params)
        conn.commit()
        cur.close()
        conn.close()
        return u'删除数据库成功'