def test_contains(self):
        d = {}
        self.assertNotIn('a', d)
        self.assertFalse('a' in d)
        self.assertTrue('a' not in d)
        d = {'a': 1, 'b': 2}
        self.assertIn('a', d)
        self.assertIn('b', d)
        self.assertNotIn('c', d)

        self.assertRaises(TypeError, d.__contains__)
dataset/ETHPy150Open amrdraz/kodr/app/brython/www/src/Lib/test/test_dict.py/DictTest.test_contains/original