title: Clear all cookie in Python request
body: <p>I use Request python to post a form .
  I need to clear all cookie before I post the form with request.
  Do you have a solution ?</p>
  
  <p>My python code :</p>
  
  <pre><code>url = "http://www.do-ain.com/ak/post"
  session = requests.session()
  r = session.get(url, allow_redirects=False)
  r.headers.get('location')
  cj = cookielib.CookieJar()
  payload = {'check': '0'}
  cookies = {'fretx':'6544555X'}
  r = requests.post(url, data=payload,cookies=cookies)
  </code></pre>