bad.py

  def get_preferred_or_current_user(self, user, request_user, session_data={}):
      client_system = getattr(request_user, 'client_system', None)
      if not client_system:
          return user

      disabled_uids = self._get_disabled_uids(client_system, user)

      preferred_user = self._get_preferred_from_session(client_system, session_data, user, disabled_uids)
      if preferred_user:
          return self._proccess_preferred_user(preferred_user)

      active_registrations = self._get_active_registrations(client_system, user, disabled_uids)
      if not active_registrations and str(user.uid) in disabled_uids:
          return

      preferred_user = self._get_preferred(active_registrations)
      if preferred_user:
          return self._proccess_preferred_user(preferred_user)
      elif str(user.uid) in disabled_uids and len(active_registrations) == 1:
          return self._proccess_preferred_user(active_registrations[0].user)

      return user