Sync/async diff

async_request.py

import grequests

urls = [
    'http://www.heroku.com',
    'http://python-tablib.org',
    'http://httpbin.org',
    'http://python-requests.org',
    'http://kennethreitz.com'
]

rs = (grequests.get(u) for u in urls)

print grequests.map(rs)

log.txt

elfenlaid$ time python sync_request.py
[200, 200, 200, 200, 200]

real	0m5.466s
user	0m0.187s
sys	0m0.046s

elfenlaid$ time python async_request.py
[<Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>]

real	0m1.427s
user	0m0.184s
sys	0m0.045s

sync_request.py

import requests

urls = [
    'http://www.heroku.com',
    'http://python-tablib.org',
    'http://httpbin.org',
    'http://python-requests.org',
    'http://kennethreitz.com'
]

rs = (requests.get(u) for u in urls)

print map(lambda r: r.status_code, rs)