import asyncio

import aiohttp


@asyncio.coroutine
def is_html(session, url):
    response = yield from session.head(url, compress=True)
    print(url, "text/html" in response.headers["Content-Type"])


if __name__ == '__main__':
    links = ["https://httpbin.org/html",
             "https://httpbin.org/image/png",
             "https://httpbin.org/image/svg",
             "https://httpbin.org/image"]
    loop = asyncio.get_event_loop()

    conn = aiohttp.TCPConnector(verify_ssl=False)
    with aiohttp.ClientSession(connector=conn, loop=loop) as session:
        f = asyncio.wait([is_html(session, link) for link in links])
        loop.run_until_complete(f)

https://httpbin.org/image/svg False
https://httpbin.org/image False
https://httpbin.org/image/png False
https://httpbin.org/html True

import asyncio
import aiohttp
URLS = [...]

if __name__ == "__main__":
    print(
        asyncio.get_event_loop().run_until_complete(
            asyncio.gather(*(foo(url) for url in URLS))))

async def foo(url):
    async with aiohttp.ClientSession() as s:
        async with s.head(...) as r:
            return url, r.headers[...]