PYTHON自学手册--用户登陆接口

# PYTHON自学手册--用户登陆接口

流程图

代码如下：

import sys
with open('white_user.txt','r',encoding='utf-8')as w_user,\
open('black_user.txt','r',encoding='utf-8')as b_user:
user_lis_bak=b_user.read().split(',')#黑名单列表
user_lis_dict={}
for i in w_user:
#print(i)
user_lis_dict.setdefault(i.split()[0],i.split()[1])
for i in range(5):
name = input('请输入用户名:')
if name in user_lis_bak:
print('用户名已被锁定')
continue
elif name in user_lis_dict:
for count in range(3):
password = input('请输入密码:')
if password == user_lis_dict.get(name):
print('亲爱的会员，欢迎回来！')
sys.exit(0)
else:
if count==2:
name_bak_white = open('black_user.txt', 'a', encoding='utf-8')
name_bak_white.write(name + ',')
name_bak_white.close()
print('用户名已被锁定')
sys.exit(0)
print('密码错误,请重新输入')
continue

else:

if i == 4:
print('尝试次数过多,退出')
continue
w_user.close()
b_user.close()