@classmethod
    def _sum_dicts(cls, total, partial):
        for key, val in partial.items():
            if val != -1:
                total[key] += val
        for key in partial.keys():
            if total not in key:
                total[key] = -1
        return total
dataset/ETHPy150Open opennode/nodeconductor/nodeconductor/quotas/models.py/QuotaModelMixin._sum_dicts/swapped operands of `not in`