Python文件读写操作

Python文件操作实现用户注册登录功能

# 实现用户注册登录功能
def register():
    register_name = input('please input your name: ')
    register_passwd = input('please input your password: ')
    with open (r'db.txt', mode='a', encoding='utf-8') as fwrite:
        fwrite.write(f'{register_name}:{register_passwd}'+'\n')

def login():
    input_name=input('请输入你的名字: ').strip()
    input_passwd=input('请输入你的密码: ').strip()
    with open(r'db.txt',mode='r',encoding='utf-8') as f:
        for line in f:
            # 把用户输入的名字与密码与读出内容做比对
            u,p=line.strip('\n').split(':')
            if input_name == u and input_passwd == p:
                print('登录成功')
                return 0
            print('账号名或者密码错误')

if __name__ == '__main__':
    while(True):
        input_param = input('please input 1 to regist and 2 to login: ')
        if input_param == '1':
            register()
            break
        elif input_param == '2':
            login()
            break
        elif input_param == 'q':
            break
        else:
            print('input error, please input again!')

reference1 https://blog.youkuaiyun.com/weixin_44571270/article/details/105891195
reference2 https://blog.youkuaiyun.com/weixin_44571270/article/details/105777541