def __or__(self, other):
        return self.database.sunion(self.key, other.key)
Just make sure everything is set up correctly.
dataset/ETHPy150Open coleifer/walrus/walrus/containers.py/Set.__or__--crossover with--dataset/ETHPy150Open henriquebastos/django-fixturapp/src/fixturapp/tests/test_common.py/TestCommon.test_environment