python连接mysql数据库

 1 import MySQLdb
 2 
 3 hostname = "10.20.10.111"
 4 username = "user"
 5 passwd = "123456"
 6 port = 3306
 7 conn = MySQLdb.connect(host = hostname,port = port,user = username,passwd = passwd) #此处注意要写上形参的名字，否则报错
 8 cur = conn.cursor()
 9 r1 = cur.execute("show databases")
10 r2 = cur.fetchmany(t1) #返回数据库名的元祖
11 cur.close()
12 conn.commit()
13 conn.close()