Python下使用MySQLdb模块,一般情况下,MySQLdb模块会自动提交修改。为确保起见,最好手动运行一次,尤其是使用update时conn.com
1、导入模块
import MySQLdb
>>> help ('MySQLdb')>>> help ('MySQLdb.cursors')
2、连接数据库
conn = MySQLdb.Connection(host='host',user= 'user',passwd= 'password',db = 'dbname',port=port)
例如:
conn = connect(host='10.0.*.*',user='root',db='mysql',port=3306,,passwd='test')
host:需要连接Mysql的主机ip
user:连接mysql使用的用户名
password:连接使用的用户名密码
dbname:默认打开的数据库
连接成功后,如需切换该用户的其他数据库,使用以下语句:
conn.select_db('database name')
3、获取数据库操作游标(指针)
因该模块底层其实是调用C API的,所以,需要先得到当前指向数据库的指针
cur = conn.cursor()
4、对数据库的相关操作
先使用指针对象执行SQL查询语句:
cur.execute('select * from tables')
其返回值为SQL语句得到的行数,如:2L,表示2行。
然后,可以从该对象的fetchone或fetchall方法得到行信息。
指针对象的fetchone()方法,是每次得到一行的tuple返回值:

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