def shadow_callback()

in iot_client.py [0:0]


    def shadow_callback(self, _0, _1, message):
        payload = json.loads(message.payload)['state']
        print("Received a shadow update: ")
        print(payload)
        print("from topic: ")
        print(message.topic)
        print("--------------\n\n")
        if "desired" in payload.keys():
            if payload["desired"]:
                self.update_device_configuration_from_shadow_update(payload)
            else:
                print("No changes requested")
        else:
            print("No changes requested")