import os
import sys
import getpass
login_username = 'admin'
login_password = '12345'
u = 0
while u < 3:
username = input('请输入用户名:')
is_change_pwd = 0;
if username == login_username:
p = 0
while p < 3 :
if is_change_pwd == 0:
password = input('请输入密码:')
if password == login_password:
print('欢迎%s登录管理平台,' % username)
sys.exit(0)
else:
if p != 2:
print('用户%s密码错误,请重新输入,还有%d次机会' % (username, 2 - p))
p += 1
if p == 3:
password_modify = input('是否要修改密码:')
if password_modify != 'n':
p = 0
is_change_pwd = 1
else:
new_password = input('请输入新的密码:')
login_password = new_password
print('密码修改成功')
is_change_pwd = 0
else:
print('用户 %s 达到最大登录次数,将被锁定并退出' % username)
break
else:
if u != 2:
print('用户%s 不存在,请重新输入,还有%d 次机会' %(username,2 - u))
u += 1
else:
sys.exit('因为您的错误输入,程序已经退出,请重新运行')