import io
import pycurl
from StringIO import StringIO

c = pycurl.Curl()
c.setopt(pycurl.URL, "http://www.twitter.com/")
c.setopt(pycurl.HTTPHEADER, ["Accept:"])
c.setopt(pycurl.COOKIEFILE, "cookieDeLogueoTwitter.txt")
c.setopt(pycurl.REFERER,"http://www.twitter.com/")
c.setopt(pycurl.FOLLOWLOCATION, 1)
c.setopt(pycurl.SSL_VERIFYPEER, 0)
c.setopt(pycurl.SSL_VERIFYHOST, 0)

e = io.BytesIO()
c.setopt(pycurl.WRITEFUNCTION, e.write)

c.perform()
print c.getinfo(pycurl.HTTP_CODE), c.getinfo(pycurl.EFFECTIVE_URL)

content = e.getvalue()

posicion_token = content.find("authenticity_token")

print "El token es"

token = content[posicion_token-48:posicion_token-8]

##
print content[posicion_token-48:posicion_token-8]
##

token = str(token)

print token

c.setopt(pycurl.URL, "https://twitter.com/sessions")
c.setopt(pycurl.HTTPHEADER, ["Accept:"])
c.setopt(pycurl.COOKIEFILE, "cookieDeLogueoTwitter.txt")
c.setopt(pycurl.REFERER,"http://www.twitter.com/")
c.setopt(pycurl.FOLLOWLOCATION, 1)
c.setopt(pycurl.SSL_VERIFYPEER, 0)
c.setopt(pycurl.SSL_VERIFYHOST, 0)
c.setopt(pycurl.POST, 1)

username = "user"
password = "password"

postfields = { "session[username_or_email]" : "usuario" , "session[password]" : "password","return_to_ssl": "true", "scribe_log": "", "redirect_after_login":"%2F", "authenticity_token": token }

print postfields

c.setopt(pycurl.POSTFIELDS, postfields)