question on what is going on under the hood

[schaefer01]

hi,

I have questions ...

1. Can anyone describe why putting a asyncio.sleep as a solitary statement in a task group only runs once
   while putting:

async with aiomqtt.Client(broker) as client:
print("entering def_listen_1 (2)")
await client.subscribe("temperature/#")
async for message in client.messages:
print("listen_1:",message.payload)

in its own task group stays resident for all messages over time?

2. why using task groups there is background processing but there seems to be no ability to do foreground processing?
   What am I missing? Is this in the API?

3. Can there be individual tasks instead of task groups? What am I missing? Is this in the API? And If there are then what would I lose over using a task group?

4. Is there a way to pause/resume a task or task group? I guess there would have to be a foreground to do that but
   if not, then given certain "events" detected in one task, it might make sense to temporarily pause or halt and
   restart other tasks. Does this make sense?

thank you,
bob s.