class SpecObject(object):
    """自定义类"""

    fields_map = {}

    def dict_to_show(self, **kwargs):
        """显示对象"""

    def dict_to_save(self, **kwargs):
        """存储对象"""
        _dict_ = dict()

        for key in self.__dict__.keys():
            if type(self.__dict__[key]).__name__ in ['str', 'int', 'float', 'dict', 'bool', 'tuple']:
                _dict_[self.fields_map[key]] = self.__dict__[key]
            elif type(self.__dict__[key]).__name__ == 'list':
                if len(self.__dict__[key]) == 0:
                    _dict_[self.fields_map[key]] = self.__dict__[key]
                elif type(self.__dict__[key][0]).__name__ in ['str', 'int', 'float', 'dict', 'bool', 'tuple']:
                    _dict_[self.fields_map[key]] = self.__dict__[key]
                else:
                    _dict_[self.fields_map[key]] = [item.dict_to_save() for item in self.__dict__[key]]
            elif self.__dict__[key] is None:
                _dict_[self.fields_map[key]] = self.__dict__[key]
            else:
                _dict_[self.fields_map[key]] = self.__dict__[key].dict_to_save()

        if 'columns' in kwargs:
            _dict_ = {key: _dict_[key] for key in kwargs['columns']}

        return _dict_