
import requests
from bs4 import BeautifulSoup
from captcha import GTK_captcha as Captcha
from urlparse import urljoin

CAPTCHA_LIMIT = 5

class Captcha_Limit_Exhausted(Exception):
    pass

def captcha_is_required(soup):
    return bool(soup.form)

def bypass_captcha(form, s=requests.Session()):
    r2 = s.get(form.iframe['src'])
    soup2=BeautifulSoup(r2.text)
    captcha_url = urljoin(r2.url,soup2.img['src'])
    captcha_r = s.get(captcha_url)
    captcha_text = Captcha.from_request(captcha_r).join()
    return {'recaptcha_challenge_field':soup2.form.find('input',attrs={'name':'recaptcha_challenge_field'})['value'],
            'recaptcha_response_field':captcha_text}
def request_get(url, s=requests.Session()):
    limit = 0
    r = s.get(url)
    while limit

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