python MySQLdb 对mysql基本操作方法

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

 conn = MySQLdb.connect(host='192.168.1.101',user='root',passwd='',db='host')
 cur = conn.cursor(cursorclass=MySQLdb.cursors.DictCursor)
 reCout = cur.execute('select ip,name from host,user where user.name = "alex" and user.id=host.id')
 nRet = cur.fetchall()
 conn.commit()
 cur.close()
 conn.close()
 print reCout
 print nRet
 for i in  nRet:
     print i['name'],i['ip']

 """
 #修改
 conn = MySQLdb.connect(host='192.168.1.101',user='root',passwd='123',db='host')
 cur = conn.cursor()
 reCout = cur.execute('update host set id=%s',(1,))
 conn.commit()
 cur.close()
 conn.close()
 print reCout
 """
 """
 #删除
 conn = MySQLdb.connect(host='192.168.1.101',user='root',passwd='123',db='host')
 cur = conn.cursor()
 reCout = cur.execute('delete from host')
 conn.commit()
 cur.close()
 conn.close()
 print reCout
 """
 """
 l = [
     ('192.168.1.107','2'),
     ('192.168.1.108','2'),
     ('192.168.1.109','2'),
     ('192.168.1.177','2'),
 ]
 #插入多条数据
 conn = MySQLdb.connect(host='192.168.1.101',user='root',passwd='123',db='host')
 cur = conn.cursor()
 reCout = cur.executemany('insert into host(ip,id) values(%s,%s)',l)

 conn.commit()
 cur.close()
 conn.close()
 print reCout
 """
 """
 #插入单条数据
 conn = MySQLdb.connect(host='192.168.1.101',user='root',passwd='123',db='host')
 cur = conn.cursor()
 reCout = cur.execute('insert into host(ip,id) values(%s,%s)',('192.168.1.1','1'))

 conn.commit()
 cur.close()
 conn.close()
 print reCout
 """