Looking for a event-message-qeue framework

[Eric von Horst]

Hi,

I am looking for a kind of framework that let's me send events between
systems.
What I had in mind is common event bus that can be spread over
multiple systems.
On each system, there should be sort of an 'agent' that listens to the
events on the bus and acts upon them if they are destined for the
agent.
The agent should also be able to send events.
Some queue mechanism would also be nice.

Is there something like this in Python? (I really want to avoid Java
or MQ series)

Eric