import urllib2
from urllib import urlencode
diccionario={'user':'swik','passwrd':'pass','cookielength':'9000'}
cookie = urllib2.HTTPCookieProcessor()
opener = urllib2.build_opener(cookie)
urllib2.install_opener(opener)
datos = urlencode(diccionario)
direc = urllib2.urlopen('direccion del login', datos)
print direc.read()
direc.close()
asi?