#! usr/bin/env python
#!-*-conding:utf-8-*-
#第一步：定义变量 name = ‘python‘ passwd = ‘password‘
#第二步：写while循环  定义count=0
#第三步：判断count=3则打印print("Account Be Locked!!Please Change User")并跳出程序break
#第四步：用input模块和用户交互
#第五步：if判断用户输入是否何定义变量的值相同，用户名和密码匹配则打印Welcome Login...并跳出程序break
#第六步：if判断用户输入和定义用户和密码不匹配则循环三次退出程序
name = ‘python‘
passwd = ‘password‘
count = 0
while True:
    if count == 3:
        print("Account Be Locked!!Please Change User")
        break
    username =input("Please input your name :")
    password =input("Please input your password:")
    if username == name and password == passwd:
        print("Welcome Login...")
        break
    else:
        print("Login falied ,Please again Try...Thank you!")
        count +=1

菜鸟生活（python）之if判断