问何时将协同线转换为任务？

EN

event_loop = asyncio.get_event_loop()

async def run_periodically(interval, func):
    while True:
        print(f"...{datetime.datetime.now()}")
        await func()
        await asyncio.sleep(interval)

print(f"start.... {datetime.datetime.now()}")
func = lambda: do_work("arg_1", kw1="kw_1")
task = event_loop.create_task(run_periodically(10, func))  # is create_task() needed here?
# task = run_periodically(10, func)  # this line works too
event_loop.run_until_complete(task)

tornado.ioloop.IOLoop.current().start()

async def do_work(arg1, kw1):
    """To be run periodically"""
    await asyncio.sleep(1)
    print(f"...{datetime.datetime.now()}: args: {arg1} kwargs: {kw1}")