python - Is the order of publication in a "multiple" call guaranteed?

Question

I would like to publish a set (~100) of messages at once to an MQTT broker. To do so I will use publish.multiple().

The messages are of the form topic/one, topic/two, ... with each a payload. The order for these messages does not matter.

I need, however, to send first a message to topic with an empty payload in order to delete the existing messages. I would like to place it first in the list of messages to be sent.

Is there a guarantee that it will be processed first?

question from:https://stackoverflow.com/questions/65938554/is-the-order-of-publication-in-a-multiple-call-guaranteed

Answer 1

Looking at the paho publish code, it invokes Collections.popleft() so if you pass a tuple that has the no-op payload first, I believe it should work.