python MySQLdb的操作

1.import MySQLdb;

2.与mysql数据库建立连接：con=MySQLdb.connect(user='root',db='mysql',passwd='dingjia',host='localhost')

3.当没有游标cursor对象时候，连接对象可以使用query()方法，执行sql查询

 con.query('create database test')

4.使用游标对象和execute()方法来执行sql

cur=con.cursor()  返回游标对象

cur.execute('create table users(login varchar(8),uid INT)')

cur.execute('insert into users values('hzhida',1000)')

cur.execute('select *from users')

for data in cur.fetchall(): 输出查询结果得到的数据

　　print '%s\t%s' % data

cur.close()  关闭游标

con.commit()  提交事务

con.close()     关闭连接

python cookbook 的例子:

#-*-coding:utf-8-*-
import MySQLdb,cPickle

#连接到数据库，并获得图标
connection = MySQLdb.connect(user = 'root',db='zm',passwd = '36039975',host='localhost')
cursor = connection.cursor()

#创建一个新表以用于试验
cursor.execute('create table test(name TEXT, ablob BLOB)')

try:
    #准备一些BLOB用于测试
    names = 'aramis', 'athos','porthos'
    data = { }
    for name in names:
        datum = list(name)
        datum.sort()
        data[name] = cPickle.dumps(datum,2)
    #execute insert
    sql = "insert into test values(%s, %s)"
    for name in names:
        cursor.execute(sql,(name,MySQLdb.escape_string(data[name])))
    #check in the database
    sql = "select name, ablob from test order by name"
    cursor.execute(sql)
    for name , blob in cursor.fetchall():
        print name, cPickle.loads(blob), cPickle.loads(data[name])

finally:
    #finish,delete table and close connection
    cursor.execute("drop table test")
    cursor.close()
    connection.close()
输出：

aramis ['a', 'a', 'i', 'm', 'r', 's'] ['a', 'a', 'i', 'm', 'r', 's']
athos ['a', 'h', 'o', 's', 't'] ['a', 'h', 'o', 's', 't']
porthos ['h', 'o', 'o', 'p', 'r', 's', 't'] ['h', 'o', 'o', 'p', 'r', 's', 't']