Uses a certificate (in PEM) to authenticate (through WebID) and access a protected page.

delegated-webid.py

#!/usr/bin/env python

import urllib
import httplib2

cert_file = 'my.pem'

http = httplib2.Http(disable_ssl_certificate_validation=True)
http.add_certificate('', cert_file, domain='')

url = 'https://auth.my-profile.eu/auth/index.php?authreqissuer=https://my-profile.eu/index.php'   
response, content = http.request(url)

headers = {'Cookie': response['set-cookie']}

newurl = 'https://my-profile.eu/test.php'
response, content = http.request(newurl, 'GET', headers=headers)
print content