code: def publish(self, topic, payload, QoS):
          
          return self._mqtt_core.publish(topic, payload, QoS, False)
docs: **Description**
  
          Publish a new message to the desired topic with QoS.
  
          **Syntax**
  
          .. code:: python
  
            # Publish a QoS0 message "myPayload" to topic "myTopic"
            myAWSIoTMQTTClient.publish("myTopic", "myPayload", 0)
            # Publish a QoS1 message "myPayloadWithQos1" to topic "myTopic/sub"
            myAWSIoTMQTTClient.publish("myTopic/sub", "myPayloadWithQos1", 1)
  
          **Parameters**
  
          *topic* - Topic name to publish to.
  
          *payload* - Payload to publish.
  
          *QoS* - Quality of Service. Could be 0 or 1.
  
          **Returns**
  
          True if the publish request has been sent to paho. False if the request did not reach paho.