def test_hashability(self):
        container = {}
        container[self.first] = None
        container[self.second] = None
        self.assertEqual(len(container), 2)
In order for one test method to be runnable twice, two TestCase
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/trial/test/test_testcase.py/TestCaseMixin.test_hashability