Python 新手提问

# coding=utf-8
import requests
from bs4 import BeautifulSoup as bs

s = requests.Session()
headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36',
    'Origin': 'http://www.v2ex.com',
    'Referer': 'http://www.v2ex.com/signin',
    'Host': 'www.v2ex.com',
}

r = s.get('http://www.v2ex.com/signin', headers=headers)
soup = bs(r.content)
once = soup.find('input', {'name': 'once'})['value']
print 'login once = ' + once

login_data = {'u': 'Registering', 'p': '1111111111', 'once': once, 'next': '/'}
s.post('https://www.v2ex.com/signin', login_data, headers=headers)

v_topic = s.get('https://www.v2ex.com/t/185169', headers=headers)
soup = bs(v_topic.content)
once = soup.find('input', {'name': 'once'})['value']
print 'title once = ' + once


comment_data = {'content': 'I am a sexy robot','once': once}
s.post('https://www.v2ex.com/t/185169', comment_data, headers=headers)

>>> 
login once = 50558
title once = 59608

Traceback (most recent call last):
  File "E:\python\learningCode\fakelogin.py", line 28, in <module>
    s.post('https://www.v2ex.com/t/185169', comment_data, headers=headers)
  File "E:\python27_9\lib\site-packages\requests\sessions.py", line 508, in post
    return self.request('POST', url, data=data, json=json, **kwargs)
  File "E:\python27_9\lib\site-packages\requests\sessions.py", line 465, in request
    resp = self.send(prep, **send_kwargs)
  File "E:\python27_9\lib\site-packages\requests\sessions.py", line 573, in send
    r = adapter.send(request, **kwargs)
  File "E:\python27_9\lib\site-packages\requests\adapters.py", line 415, in send
    raise ConnectionError(err, request=request)
ConnectionError: ('Connection aborted.', ResponseNotReady())
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