def user_login(self, email=None, password=None):
        """Login with email, password and get back a session cookie

        :type  email: str
        :param email: The email used for authentication
        :type  password: str
        :param password: The password used for authentication
        """
        self._rpc_api = PiazzaRPC()
        self._rpc_api.user_login(email=email, password=password)