retiese2.py

import requests
sites = [
    'http://www.google.com', 
    'http://www.youtube.com', 
    'http://www.polimi.it',
    'http://wikipedia.org', 
    'http://www.amazon.it', 
    'http://www.twitter.com'
]


def find_average(request_times):
    return sum(request_times) / len(request_times)


def get_url_times(url):
    times = []
    for request in range(10):
        r = requests.get(url)
        times.append(r.elapsed.microseconds/1000)

    return times


def main():
    min_avg = 0
    current_min_url = ''

    for url in sites:
        times = get_url_times(url)
        avg = find_average(times)
        if min_avg == 0:
            min_avg = avg
            current_min_url = url
        elif avg < min_avg:
            min_avg = avg
            current_min_url = url

    print(current_min_url)

main()