kennethreitz/requests — pull request #1291 by gazpachoking (2013-04-05 03:37:35+00:00)
Title: Don't set all session cookies on response.cookies

This prevents all the session cookies from being set in response.cookies. I believe the old behavior was a workaround due to how session cookies were being updated before #1290
After this, response.cookies will match up with the set-cookies header for the response.

As discussed here: https://botbot.me/freenode/python-requests/msg/2568299/