class SpecObject(object):
    """自定义父类"""

    fields_map = {}

    def fields_toggle(self, **kwargs):
        """字典键值切换"""
        default_types = ['str', 'int', 'float', 'dict', 'bool', 'tuple']

        if 'fields' in kwargs:
            self.__dict__ = {key: self.__dict__[key] for key in kwargs['fields']}

        _dict_ = dict()
        for key in self.__dict__.keys():
            if key in self.fields_map.keys():

                # 常规类型
                if type(self.__dict__[key]).__name__ in default_types:
                    _dict_[self.fields_map[key]] = self.__dict__[key]

                # 列表类型
                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.fields_toggle() for item in self.__dict__[key]]

                # 空值类型
                elif self.__dict__[key] is None:
                    _dict_[self.fields_map[key]] = self.__dict__[key]

                # 对象类型
                else:
                    _dict_[self.fields_map[key]] = self.__dict__[key].fields_toggle()

        return _dict_

    def set_instance(self, **kwargs):
        """赋值实例"""
        fields_map = dict([v, k] for k, v in self.fields_map.items())
        for field in list(kwargs['data'].keys()):
            self.__setattr__(fields_map[field], kwargs['data'][field])

    @staticmethod
    def set_specify_instance(**kwargs):
        """赋值指定实例"""
        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 set_specify_instance_list(**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_