3/13 作业

一：今日作业：
1、编写文件copy工具

o_path = input('原文件的路径：')
n_path = input('新文件路径：')
with open(r'{}'.format(o_path),mode='r',encoding='utf-8') as f1,
     open(r'{}'.format(n_path),mode='w',encoding='utf-8') as f2:
    res = f1.read()
    f2.write(res)

2、编写登录程序，账号密码来自于文件

user = input('请输入账号：')
pwd = input('请输入密码：')
with open('1.txt',mode='r',encoding='utf-8') as f:
    res = f.readlines()
    for line in res:
        user1,pwd1 = line.strip().split(':')
        if user1 == user and pwd1 == pwd:
            print('登陆成功')
            break
    else:
        print('登陆失败')

3、编写注册程序，账号密码来存入文件

while True:
    user = input('请输入账号：')
    if user.strip():
        pwd = input('请输入密码：')
        pwd2 = input('再次确认密码：')
        if pwd == pwd2:
            with open('wcwgw_fuben.txt',mode='a',encoding='utf-8') as f:
                f.write('
{}:{}'.format(user,pwd))
            print('注册成功')
            break
        else:
            print('两次密码不一致')
    else:
        print('用户名格式不正确')