Python操作mysql（增删改查），pythonmysql,#!/usr/bin/e

Python操作mysql（增删改查），pythonmysql,#!/usr/bin/e

#!/usr/bin/env python#coding:utf-8# Purpose:学习mysql的各种操作import MySQLdbtry:    #连接mysql的方法：connect('ip','user','password','dbname')        #conn=MySQLdb.connect(host='localhost',user='root',passwd='123456',db='test')    conn =MySQLdb.connect('127.0.0.1','root','123456',charset = 'gb2312')    conn.select_db('python')    cur=conn.cursor()    sql1 = 'drop database python' #删除数据库     sql2 = 'create database if not exists python' #若不存在，则创建数据库    sql3 = 'create database python'    sql4 = 'create table module(m_id int not null,m_name VARCHAR(25),m_size int)'#创建表    sql5 = 'create table if not exists demo(d_id int not null,d_name varchar(25),m_size int default 0)'    values=[]    for i in range(1):         values.append((i,'mysql',i+1))     sql6 = 'insert into module values(%s,%s,%s)'    #cur.executemany(sql6,values)   #批量插入    values = [1,'MySQLdb',5]    sql6 = "insert into module VALUES('%d','%s','%d')"%(2,'MySQLdb',7) #插入    #sql6 = "insert into module(m_id,m_name,m_size) VALUES('%d','%s','%d')"%(2,'MySQLdb',7)    #sql6 = "insert into module(m_id,m_name,m_size) VALUES('%d','%s','%d')"%(values[0],values[1],values[2])    sql7 = "update module set m_name='MySql' where m_id=0 and m_size=0" #修改    sql8 = "delete from module where m_id=1 and m_size=0" #删除    sql9 = "select * from module where m_id=1"    cur.execute(sql9)    count = cur.execute(sql9)  #查询结果数量    print u'查询结果数量：',count    result = cur.fetchone()     print u'单条查询结果：',result    result = cur.fetchmany(2)    print u'多条查询结果：',result    result = cur.fetchall()    print u'所有不同的查询结果：',result    for data in result:        print data    conn.commit()    cur.close()    conn.close()except MySQLdb.Error,e:    print "Mysql Error %d: %s" % (e.args[0], e.args[1])#该片段来自于http://byrx.net