day8.登陆注册简单实现

 1 username = input('请输入注册的用户名：')
 2     password = input('请输入注册名的密码：')
 3     with open('list_of_info',mode='w',encoding= 'utf-8') as f:
 4         f.write('{}
{}'.format(username,password))
 5     print('注册成功')
 6 
 7 
 8     lis = []
 9     i = 0
10     while i < 3:
11         usn = input('请输入用户名：')
12         pwd = input('请输入密码：')
13         with open('list_of_info', mode='r+', encoding='utf-8') as f1:
14             for line in f1:
15                 lis.append(line.strip())
16         if usn == lis[0] and pwd == lis[1]:
17             print('登陆成功')
18             break
19         else:
20             print('账号密码错误')
21         i = i + 1