python里的asyncio.sleep和time.sleep区别

import asyncio
import time


async def get_html(url):
    print('start get url')
    # time.sleep(2)  # 同步阻塞，会阻塞整个脚本
    await asyncio.sleep(2)  # asyncio.sleep是非阻塞，await后面必须是一个awaitable对象
    print('end get url')


if __name__ == '__main__':
    start_time=time.time()
    loop=asyncio.get_event_loop()
    tasks=[get_html('www.baidu.com') for i in range(10)]
    loop.run_until_complete(asyncio.wait(tasks))# 阻塞
    print(time.time()-start_time)