Python3 async simple sample

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import asyncio
import aiohttp
import async_timeout

URLs = [
    'https://aiohttp.readthedocs.org/',
    'https://www.baidu.com/',
    'https://www.google.com/',
    'https://www.mozilla.org/',
    'https://www.twitter.com/',
    'https://www.ebay.com/',
    'https://www.autodesk.com/',
    'https://www.taobao.com/',
    'https://www.jd.com/',
]


async def get_site(url):
    async with aiohttp.ClientSession() as sess:
        async with async_timeout.timeout(10):
            async with sess.get(url) as res:
                html = await res.text()
                print("Length %s: %s" % (url, len(html)))

loop = asyncio.get_event_loop()
tasks = [get_site(site) for site in URLs]
loop.run_until_complete(asyncio.wait(tasks))
loop.close()