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

    fields_map = {}

    def dict_keys_toggle(self, **kwargs):
        """字典键值切换"""
        _dict_ = dict()
        default_types = ['str', 'int', 'float', 'dict', 'bool', 'tuple']
        for key in self.__dict__.keys():
            if type(self.__dict__[key]).__name__ in default_types:
                _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 default_types:
                    _dict_[self.fields_map[key]] = self.__dict__[key]
                else:
                    _dict_[self.fields_map[key]] = [item.dict_keys_toggle() 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_keys_toggle()

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

        return _dict_

    def dict_to_show(self, **kwargs):
        """字典显示格式"""
        return self.dict_keys_toggle(**kwargs)

    def dict_to_save(self, **kwargs):
        """字典存储格式"""
        return self.dict_keys_toggle(**kwargs)

    def dict_to_return(self, **kwargs):
        """字典返回格式"""

    @staticmethod
    def dict_to_set(**kwargs):
        """实例设值"""
        instance = kwargs['instance']()
        fields_map = dict([v, k] for k, v in instance.fields_map.items())
        for field in list(kwargs['data'].keys()):
            instance.__setattr__(fields_map[field], kwargs['data'][field])
        return instance

    @staticmethod
    def instance_list_to_set(**kwargs):
        """实例数组设值"""
        list_ = list()
        for item in list(kwargs['data']):
            instance = kwargs['instance']()
            fields_map = dict([v, k] for k, v in instance.fields_map.items())
            for field in list(item.keys()):
                instance.__setattr__(fields_map[field], item[field])
            list_.append(instance)

        return list_

    @staticmethod
    def get_attr(_dict_, _key_, **kwargs):
        """获取字典属性值"""
        value = kwargs['default'] if kwargs.__contains__('default') else None
        try:
            value = _dict_[_key_]
        except KeyError:
            pass
        return value