wc.py

import asyncio
import urllib.request
import requests
import time
import random

DELAY = False

WEBSITES = [
        "http://python.org/",
        "http://python.org/",
        "http://python.org/",
        "http://docker.com",
        "http://python.org/",
        "http://docker.com",
        "http://gobyexample.com",
        "http://python.org/",
        "http://docker.com",
        "http://gobyexample.com",
        "http://python.org/",
        "http://docker.com",
        "http://python.org/",
        "http://docker.com",
        "http://python.org/",
        "http://docker.com",
        "http://gobyexample.com",
        "http://gobyexample.com",
        "http://python.org/",
        "http://python.org/",
        "http://docker.com",
        "http://gobyexample.com",
        "http://docker.com",
        "http://gobyexample.com",
        "http://gobyexample.com",
        "http://gobyexample.com",
        "http://docker.com",
        "http://gobyexample.com",
        "http://docker.com",
        "http://gobyexample.com"
        ]


@asyncio.coroutine
def get_data(future, site, idx):
    def get_response():
        dat = requests.get(site)
        future.set_result((idx, dat.text[0:25]))
    yield from asyncio.sleep(random.randint(1, 5))
    get_response()


def print_result(future):
    print(future.result())


if __name__ == "__main__":
    loop = asyncio.get_event_loop()
    futures = [ asyncio.Future() for i in WEBSITES ] 
    tasks = [ asyncio.ensure_future(get_data(futures[idx], site, idx)) for idx, site in enumerate(WEBSITES) ]
    for future in futures:
        future.add_done_callback(print_result)

    loop.run_until_complete(asyncio.wait(tasks))
    loop.close()