import asyncio
import time


async def task():
    print(f"{time.strftime('%H:%M:%S')} task 开始 ")
    time.sleep(2)
    print(f"{time.strftime('%H:%M:%S')} task 结束")


coroutine = task()
print(f"{time.strftime('%H:%M:%S')} 产生协程对象 {coroutine},函数并未被调用")
loop = asyncio.get_event_loop()
print(f"{time.strftime('%H:%M:%S')} 开始调用协程任务")
start = time.time()
loop.run_until_complete(coroutine)
end = time.time()
print(f"{time.strftime('%H:%M:%S')} 结束调用协程任务, 耗时{end - start} 秒")