Return True if we have to sort by set and do the stuff *after* asking
        redis for the sort

def _sort_by_sortedset_after(self):
        """
        Return True if we have to sort by set and do the stuff *after* asking
        redis for the sort
        """
        return self._sort_by_sortedset and not self._sort_limits and (not self._lazy_collection['pks']
                                                                or self._want_score_value)