title: Requests - inability to handle two cookies with same name, different domain
body: <p>I am writing a Python 2.7 script using Requests to automate access to a website that sets two cookies with the same name, but different domains, E.g. Name 'mycookie', Domain 'www.example.com' and 'subdomain.example.com'. My client-side script needs to read the value of <strong>one</strong> of these cookies and include it as a parameter in a subsequent request. Because cookie access in a <code>requests.Session</code> seems to be keyed solely by cookie name, I don't see a way to extract the correct cookie's value. Indeed, an attempt to access the cookies using the name yields this error:</p>
  
  <pre><code>  value = session.cookies["mycookie"]
  File "/usr/lib/python2.7/site-packages/requests/cookies.py", line 276, in __getitem__
    return self._find_no_duplicates(name)
  File "/usr/lib/python2.7/site-packages/requests/cookies.py", line 326, in _find_no_duplicates
    raise CookieConflictError('There are multiple cookies with name, %r' % (name))
  requests.cookies.CookieConflictError: There are multiple cookies with name, 'mycookie'
  </code></pre>
  
  <p>This suggests that Requests has been written with an assumption that cookie names are unique per session. However this is not necessarily true, as demonstrated.</p>
  
  <p>I think I can work around this by maintaining two sessions and manually copying the other important cookies between them. However I'd like to know if this is a known limitation with Requests and if so what the recommended workaround might be?</p>