code: def handle_response(self, response, **kwargs):
          
          num_401s = kwargs.pop('num_401s', 0)
  
          # Check if we have already tried to get the CBT data value
          if not self.cbt_binding_tried and self.send_cbt:
              # If we haven't tried, try getting it now
              cbt_application_data = _get_channel_bindings_application_data(response)
              if cbt_application_data:
                  # Only the latest version of pykerberos has this method available
                  try:
                      self.cbt_struct = kerberos.channelBindings(application_data=cbt_application_data)
                  except AttributeError:
                      # Using older version set to None
                      self.cbt_struct = None
              # Regardless of the result, set tried to True so we don't waste time next time
              self.cbt_binding_tried = True
  
          if self.pos is not None:
              # Rewind the file position indicator of the body to where
              # it was to resend the request.
              response.request.body.seek(self.pos)
  
          if response.status_code == 401 and num_401s < 2:
              # 401 Unauthorized. Handle it, and if it still comes back as 401,
              # that means authentication failed.
              _r = self.handle_401(response, **kwargs)
              log.debug("handle_response(): returning %s", _r)
              log.debug("handle_response() has seen %d 401 responses", num_401s)
              num_401s += 1
              return self.handle_response(_r, num_401s=num_401s, **kwargs)
          elif response.status_code == 401 and num_401s >= 2:
              # Still receiving 401 responses after attempting to handle them.
              # Authentication has failed. Return the 401 response.
              log.debug("handle_response(): returning 401 %s", response)
              return response
          else:
              _r = self.handle_other(response)
              log.debug("handle_response(): returning %s", _r)
              return _r
docs: Takes the given response and tries kerberos-auth, as needed.