Many other HTTP libraries provide a session abstraction as a way of carrying state (i.e. cookies) between requests, potentially across different origins (e.g. following redirects).

http://docs.python-requests.org/en/master/user/advanced/#session-objects

I think this is the best way to solve #302 (cc @zanker)