登陆验证

 1 '''
 2 需求：编写登陆接口
 3 三次机会
 4 '''
 5 username = 'shanyu'
 6 password = 'yulai'
 7 count = 0
 8 while count<3:
 9     u = input('请输入用户名')
10     p = input('请输入密码')
11     if u == username and p == password:
12         print('山雨欲来风满楼')
13         break
14     else:
15         print('用户输入错误，您还有{}次机会'.format(2-count))
16         count += 1
17 else:
18     print('byebye了您内！！！')