python学习之文件基本处理作业

1、编写文件copy工具

original_path = input('请输入源文件的路径>>>').strip()
copy_path = input('请输入拷贝文件的路径>>>').strip()
with open(r'{}'.format(original_path),mode = 'rt',encoding = 'utf-8') as f1,
    open(r'{}'.format(copy_path),mode = 'wt',encoding = 'utf-8') as f2:
    content = f1.read()
    f2.write(content)

2、编写登录程序，账号密码来自于文件

inp_name = input('请输入你的账号：').strip()
inp_pwd = input('请输入你的密码：').strip()
with open(r'aaa.txt',mode = 'rt',encoding = 'utf-8') as f:
    for line in f:
        user_name,password = line.strip().split(':')
        if inp_name == user_name and inp_pwd == password:
            print('登录成功。')
            break
    else:
        print('账号或密码错误。')

3、编写注册程序，账号密码来存入文件

inp_name = input('请输入账号：').strip()
inp_pwd = input('请输入密码：').strip()
with open(r'db.txt',mode = 'at',encoding = 'utf-8') as f:
    f.write('{}:{}
'.format(inp_name,inp_pwd))