[Python] What is the pythonic way of running an asyncio event loop forever?

From the docs it seems the recommended way to kickstart a asyncio application is to use asyncio.run(), so my application looks like this:

async def async_main():
# Everything here can use asyncio.create_task():
o = ObjectThatMustBeKeptReferenced()
create_tasks_and_register_callbacks(o)

# Wait forever, ugly:
while True:
await asyncio.sleep(10000)

asyncio.run(async_main())


This infinite loop at the end of async_main() feels very wrong. In other languages, there is where I would call the event loop forever. So I tried this:

def main():
loop = asyncio.get_event_loop()

# Everything here can use asyncio.create_task():
o = ObjectThatMustBeKeptReferenced()
create_tasks_and_register_callbacks(o)

# Wait forever, pretty:
loop.run_forever()

main()


The problem here is this will fail with an error of the sorts RuntimeError: no running event loop when I call asyncio.create_task() inside my functions, even though the event loop is created and registered on the thread.

What is the pythonic, one way of sleeping forever on the asyncio event loop?

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