跟着老男孩培训写的第一次作业

需求：

1、用户可以通过用户名和密码登陆；

2、密码输入错误三次后即锁定用户

3、把用户名、密码、锁定后的用户放在文件里

4、如果没有该用户提示还没有注册

5、使用锁定的用户登陆会提示此用户已经被锁定了

1 #! /usr/bin/env python 2 # -*- coding:utf-8 -*- 3  4 username = raw_input("username: ") 5 password = raw_input("password: ") 6  7  8 # 把用户文件放到字典里面，更加容易匹配 9 def read_config():10     with open(r'E:\coding\oldboy\practice_day1\user_info', 'r') as f:11         user_dict={}12         for line in f.readlines():13             user_info = line.strip().split('=')14             user_dict[user_info[0]] = user_info[1]15             # user_dict['password'] = user_info[3]16     return user_dict17 18 19 # 检查输入的用户是否在黑名单里，如果在，显示已经在黑名单里面20 def chack_locked():21     with open(r'E:\coding\oldboy\practice_day1\lock_info', 'r') as f_lock_info:22         if username in f_lock_info.read():23             print("You are locked")24             exit(0)25 26 27 # 密码输入错误后重新输入，超过三次则会停止输入密码28 def input_again():29     count = 030     while count < 2:31         print("It is wrong password")32         password = raw_input("password again: ")33         if password in read_config()['password']:34             print('congratulition')35             break36         else:37             count += 138     else:39         print("Sorry")40     return count41 42 43 # 如果输入密码错误三次，则自动把用户添加到黑名单里面44 def locked(count):45     if count == 2:46         with open('E:\coding\oldboy\practice_day1\lock_info', 'a') as f_lock:47             f_lock.write(username)48 49 50 if __name__ == '__main__':51     chack_locked()52     user_dict = read_config()53     if username == user_dict['username'] and password == user_dict['password']:54         print("Welcome to login")55     elif username != user_dict['username']:56         print("No user, please sign up")57     elif username == user_dict['username'] and password != user_dict['password']:58         count = input_again()59         locked(count)

仍然存在的问题：

1、用户文件里无法添加多个用户，只能有一个用户登陆，把用户存放字典时，因为字典的键唯一，所以只能保存后面的用户信息