class SubscribeHandler(SubscribeCallback):
  def status(self, pubnub, event):
    print("Is there an error? ", event.is_error())
    print("Status value for category: %s" % event.category)
    print("Status value for error_data: %s" % event.error_data)
    print("Status value for error: %s" % event.error)
    print("Status value for status_code: %s" % event.status_code)
    print("Status value for operation: %s" % event.operation)
    print("Status value for tls_enabled: %s" % event.tls_enabled)
    print("Status value for uuid: %s" % event.uuid)
    print("Status value for auth_key: %s" % event.auth_key)
    print("Status value for origin: %s" % event.origin)
    print("Status value for client_request: %s" % event.client_request)
    print("Status value for client_response: %s" % event.client_response)
    print("Status value for original_response: %s" % event.original_response)
    print("Status value for affected_channels: %s" % event.affected_channels)
    print("Status value for affected_groups: %s" % event.affected_groups)

  def presence(self, pubnub, presence):
      pass  # Handle incoming presence data

  def message(self, pubnub, message):
      pass  # Handle incoming messages

  def signal(self, pubnub, signal):
      pass # Handle incoming signals

pubnub.add_listener(SubscribeHandler())

def my_publish_callback(envelope, status):
  if status.is_error():
    ... #handle error here
  else:
    ... #handle result here

pubnub.publish().channel('my_channel').message('Hello world!').pn_async(my_publish_callback)

pubnub.subscribe().channels('my_channel').execute()