用python写的登陆程序

#!/usr/bin/env python
# coding:utf-8
__author__ = "lvah"

'''
@author:linwei
@file:linwei.py
@contact:xc_123456789@qq.com
@time:6/26/179:33 AM
@desc
'''
i = 0
for i in range(0, 3):
username = raw_input("user:")
password = raw_input("password:")
if (username == 'root') and (password == 'redhat'):
print (" ")
print ("welcome to user manage system")
break
elif (username != 'root') or (password != 'redhat'):
print ("密码错误,请重新输入")
i = i + 1
else:
print (" ")
print ("你已经登陆过三次请10分钟后再登陆")

测试