def get_newly_performing(self):
        if self._previous_summary:
            dropouts = filter(
                lambda stub: stub.is_newly_performing,
                self.get_all_user_stubs_with_extra_data()
            )
            return sorted(dropouts, key=lambda stub: -stub.delta_forms)
Return all nullable columns.
dataset/ETHPy150Open dimagi/commcare-hq/corehq/apps/reports/standard/project_health.py/MonthlyPerformanceSummary.get_newly_performing--crossover with--dataset/ETHPy150Open cjauvin/little_pger/little_pger.py/LittlePGer.get_nullable_columns