环境小硕的转化之路-28-面向对象编程方法的适应性训练

前言

这是面向对象编程的一些适应性训练,做完了就会产生新的思维->面向对象编程的思维。

作业一

'''
 补充代码实现：
user_list = []
while True:
user = input(“请输入用户名:”)
pwd = input(“请输入密码:”)
email = input(“请输入邮箱:”)
1. while循环提示用户输入：用户名、密码、邮箱（正则满足邮箱格式）
2. 为每个用户创建一个对象，并添加到列表中。
3. 当列表中的添加了3个对象后，跳出循环并以此循环打印所有用户的姓名和邮箱。如：
'''
import re
user_list = []
class User_info:
    def __init__(self,name,password,email):
        self.name = name
        self.password =password
        self.email = email
    pass
while True:
    user = input('请输入用户名:')
    pwd = input('请输入密码:')
    email = input('请输入邮箱:')
    check_ret = re.search('[0-9a-zA-Z][\w\-._]*@[A-Za-z0-9\-]+(\.[A-Za-z0-9\-]+)*\.[a-zA-Z]{2,6}',email)
    if check_ret:
        user_info = User_info(user,pwd,email)
        user_list.append(user_info)
    else:
        print('please input correct email address.')
    if len(user_list) == 3:
        for i in user_list:
            print('我的名字是%s,邮箱为%s'%(i.name,i.email))
        break

　　

作业二

'''
补充代码:实现用户的注册和登陆
'''

class User:
    def __init__(self,name,pwd):
        self.name = name
        self.pwd = pwd
    pass
class Account:
    def __init__(self):
        self.user_list = []#用户列表,数据格式:[Usr对象,usr对象]
        self.black_list = []#黑名单用户列表
    def login(self):
        '''
        用户登陆,用户输入用户名和密码并去user_list中检查用户是否合法
        :return:
        '''
        usrname = input('Please input the username.')
        usrpassword = input('Please input the userpassword.')
        c = 0
        while c <=3:
            for i in self.user_list:
                    if usrname in self.black_list:
                        print('oops,the account is locked.')
                        exit()
                    elif  usrname == i.name and usrpassword == i.pwd:
                        print('login successfully')
                        exit()
                    elif usrname == i.name and usrpassword != i.pwd:
                        print('wrong password')
                        c+=1
                    else:
                        print('The account do not exist. ')
        self.black_list.append(usrname)
    def register(self):
        '''
        用户注册,动态创建user对象,并添加到self.user_list中
        :return:
        '''
        usrname = input('Please input the user that you want to register.')
        usrpassword = input('Please input the userpassword that you want to register.')
        temporary_list = []
        for i in self.user_list:
            temporary_list.append(i.name)
        if usrname not in temporary_list:
            user_info = User(usrname, usrpassword)
            self.user_list.append(user_info)
        else:
            print('The username had been used.')
    def run(self):
        '''
        主程序,先进行两次用户注册,再进行用户登陆(3次重试机会)
       :return:
        '''
        for i in range(2):
            self.register()
        self.login()
if __name__ == '__main__':
    obj = Account()
    obj.run()