reqs3.py

import gevent
from gevent import monkey
monkey.patch_all()

import requests

def worker(url, use_urllib2=False):
    return requests.get(url).text.lower()

urls = ['http://www.github.com']*5

def by_requests():
    jobs = [gevent.spawn(worker, url) for url in urls]
    gevent.joinall(jobs)

def by_urllib2():
    jobs = [gevent.spawn(worker, url, True) for url in urls]
    gevent.joinall(jobs)

if __name__=='__main__':
    from timeit import Timer
    print('starting http requests...')
    t = Timer(stmt="by_requests()", setup="from __main__ import by_requests")  
    print('by requests: %s seconds'%t.timeit(number=3))
    t = Timer(stmt="by_urllib2()", setup="from __main__ import by_urllib2")  
    print('by urllib2: %s seconds'%t.timeit(number=3))