Flask-RESTful用于验证api中的数据被接收的代码是什么？

 # 参数解析
        parser = reqparse.RequestParser(bundle_errors=True)  # 解析对象
        parser.add_argument('username', type=str, required=True, help="必须输入账号", location=['form'])
        parser.add_argument('password', type=inputs.regex(r'^\d{6,12}$'), required=True, help="必须输入密码", location=['form'])
        parser.add_argument('phone ', type=inputs.regex(r'^1[356789]\d{9}$'), location=['form'])
        parser.add_argument('icon', required=True, type=FileStorage, location=['files'])
        # From the request headers
        parser.add_argument('Host', type=str, required=True, location=['headers'])

        #在对应请求中的使用
        args = parser.parse_args()
        username = args.get('username')
        password = args.get('password')
        phone = args.get('phone')
        icon = args.get('icon')
        host = args.get('Host')