#!/usr/bin/env python
#author:lei
user = "zhanglei"
passwd = "123456"
username = input("\033[31;2musername\033[0m:")
password = input("password:")
if user == username and passwd == password:
print ("Welcome Login...")
else:
print ("invild username or password")
原文：http://www.cnblogs.com/zl-py/p/5485412.html