问Python如何返回对象

EN

content = HTTP().GET(resource="photo/2/")
content.get_image()

class HTTP(object):

    def __init__(self):
        """
        Creates a new instance of the class and assigns local variables.
        """
        self._resource = None
        self._payload = None
        self._response = None


    @property
    def resource(self):
        return self._resource

    @resource.setter
    def resource(self, value):
        self._resource = "http://api.test.com/" % value


    @property
    def payload(self):
        return self._payload

    @payload.setter
    def payload(self, value):
        self._payload = value


    @property
    def response(self):
        return self._response

    @response.setter
    def response(self, value):
        self._response = value


    def GET(self, resource):
        """
        Sends a GET request. Returns :class:`Response` object.
        :param resource: URL for the new :class:`Request` object.
        """
        self.resource = resource
        self.response = requests.get(self.resource).json()
        return self


    def get_image(self):
        """
        Gets raw image from response.
        :return: image
        """
        return requests.get(self.response["raw"])

content = HTTP().POST(resource="photo/2/", payload='{"somekye":"somevalue"}')

content = HTTP().GET(resource="photo/2/")
content.POST(payload='{"somekye":"somevalue"}')