I'm studying asyncio in Python. A question came up: If I want to run a task in the background (add it to the event loop queue), I use asyncio.create_task. At the same time, if that task contains a long operation, I want to switch back to the current coroutine where the task was launched, continue doing useful work in that coroutine, but pause it when the timeout I set for the task expires, handle that case, and then resume the useful work from where it left off. Is this possible to implement in Python? It seems await wait_for won’t work here (since it waits for the timeout to expire, blocking execution). import asyncio async def long_task(): try: print("Long task started") await asyncio.sleep(10) # Simulate a long operation return "Long task completed" except asyncio.CancelledError: print("Long task cancelled") raise async def main(): background_task = asyncio.create_task(long_task()) # Do useful work # and catch the moment ehn timeout is expired # (it may be in any line of useful work) # after processing the event of timeout expiring, resume the useful work asyncio.run(main()) I've tried to find the solution in asyncio library but nothing found Continue reading...
