aiohttp

ex.py

import asyncio
import aiohttp


@asyncio.coroutine
def get_status(url):
    code = '000'
    try:
        res = yield from asyncio.wait_for(aiohttp.request('GET', url), 4)
        code = res.status
        res.close()
    except Exception as e:
        print(e)
    print(code)


if __name__ == "__main__":
    urls = ['http://someurl/index.html'] * 10000
    coros = [asyncio.Task(get_status(url)) for url in urls]

    loop = asyncio.get_event_loop()
    executor = concurrent.futures.ThreadPoolExecutor(5)
    loop.set_default_executor(executor)
    executor.shutdown(wait=True)
    loop.close()