python asyncio 协程池

# coding:utf-8
#当前的项目名：tmp_projects
#当前编辑文件名：gventxiec
#当前用户的登录名：ltl
#当前系统日期时间：2021/5/25 13:38
#用于创建文件的IDE的名称: PyCharm
import time
import asyncio
start=time.time()
sem=asyncio.Semaphore(600)
async def run(x,sem):
    async with sem:
        print(x)
        await asyncio.sleep(5)
loop=asyncio.get_event_loop()
sc=[asyncio.ensure_future(run(x,sem)) for x in range(1000)]
loop.run_until_complete(asyncio.gather(*sc))
print(time.time()-start)