import asyncio
from contextlib import suppress


async def main():
    task = asyncio.ensure_future(asyncio.sleep(1))
    task.cancel()

    try:
        raise Exception()
    except Exception:
        with suppress(asyncio.CancelledError):
            await task
        raise

if __name__ == "__main__":
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())

Exception

concurrent.futures._base.CancelledError