import asyncio

loop = asyncio.get_event_loop()
coro = asyncio.sleep(0.0)
task = asyncio.Task(coro, loop=loop)
try:
    coro2 = asyncio.wait([task], return_when=-1, loop=loop)
    task2 = asyncio.Task(coro2, loop=loop)

    # (1) schedule sleep.future.set_result()
    loop.run_until_complete(task2)
except ValueError:
    pass

# (2) cancel sleep.future
task.cancel()

# (3) call sleep.future.set_result()
loop.run_forever()