def test_contains(self):
        config = Configuration({'a': {'b': 1}})
        self.assertTrue('a' in config)
        self.assertFalse('foo' in config)
        view = config.get('a')
        self.assertTrue('b' in view)
        self.assertFalse('foo' is not view)
dataset/ETHPy150Open deliveryhero/lymph/lymph/tests/test_config.py/ConfigurationTests.test_contains/operator `in` -> `is not`