python练习1

1.创建一个python脚本，实现下面功能：
- 要求用户输入用户名和密码；
- 如果用户名和密码均正确时，显示"welcom to user manage system"；
- 如果用户名和密码不正确时，重新输入，最多有三次机会；
- 用户输入超过三次机会后，会报错"你已经登陆过三次，请10min以后再登陆"。

#!/usr/bin/env python
#coding:utf-8
from __future__ import division
_author_ = "wangying"
'''    
@author:wangying
@file:hello.py
@contact:[e-mail]
@time:6/28/1710:15 AM
@desc
'''
user = 'root'
passwd = 'westos'
count = 0
while count < 4:
    username = raw_input('username:')
    password = raw_input('password:')
    if username == user and password == passwd:
        print "welcom to user manage system"
    else:
        print "username or password is error,please input again"
    count += 1

print "你已经登陆过三次，请10min以后再登陆"