1.   使用
    import MySQLdb
1.1.   连接
    conn =   MySQLdb.Connection(host, user, password, dbname)
1.2.   选择数据库，如果上面没有指定数据库，则使用此方法指定！
    conn.select_db(’database name’)
1.3.   获得cursor
    cur =   conn.cursor()
1.4.   cursor位置设定
    cur.scroll(int, mode)
    mode可为相对位置或者绝对位置，分别为relative和absolute。
1.5.   select
    cur.execute(‘select clause’)
    例如
    cur.execute(‘select * from mytable’)

    row = cur.fetchall()
    或者：
    row1 = cur.fetchone()
1.6.   insert
    cur.execute(‘inset clause’)
    例如
    cur.execute("insert into user (Name, Password) values ('maggie','12345')")
    conn.commit()

1.7.   update
    cur.execute(‘update  clause’)
    例如
    cur.execute("update user set Name = 'eric chau' where id = 1")
    conn.commit()

1.8.   delete
    cur.execute(‘delete  clause’)
    例如
    cur.execute("delete from user where id = 1")
    conn.commit()


完整代码：

from MySQLdb import Connect

def conn():
    #conn = Connect('localhost','root','root')
    #conn.select_db('eric')
    conn = Connect('localhost','root','root','eric')
    cur = conn.cursor()
    cur.execute('select * from user')
    cur.scroll(0)
    row1 = cur.fetchone()
    print 'id:', row1[0]
    print 'name:', row1[1]
    print 'password:', row1[2]
    #cur.execute("insert into user (Name, Password) values ('maggie','12345')")
    #cur.execute("update user set Name = 'eric chau' where id = 1")
    cur.execute("delete from user where id = 11")
    conn.commit()
if __name__=='__main__':
    conn()