async urllib

#!/usr/bin/env python3.4
import urllib.request
import asyncio


def return_response(url):
    return urllib.request.urlopen(url).read()

@asyncio.coroutine
def read_page(loop, url):
    print("reading {}".format(url))
    data = yield from loop.run_in_executor(None, lambda: return_response(url))
    print(data[:100])


if __name__ == '__main__':
    loop = asyncio.get_event_loop()
    loop.run_until_complete(
        asyncio.wait(
            [
                read_page(loop, 'http://www.onet.pl'),
                read_page(loop, 'http://www.interia.pl'),
                read_page(loop, 'http://www.wp.pl'),
                read_page(loop, 'http://www.gazeta.pl'),
            ])
    )