Pažljivo pročitaj kod

import asyncio


async def worker():
    try:
        print("start")
        await asyncio.sleep(10)
        print("never")
    except asyncio.CancelledError:
        print("cleanup")
        raise


async def main():
    t = asyncio.create_task(worker())
    await asyncio.sleep(0)
    t.cancel()
    try:
        await t
    except asyncio.CancelledError:
        print("caught")
    print("after")


asyncio.run(main())

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