test_builtin.py 文件源码

def test_new_type(self):
        A = type('A', (), {})
        self.assertEqual(A.__name__, 'A')
        self.assertEqual(A.__module__, __name__)
        self.assertEqual(A.__bases__, (object,))
        self.assertIs(A.__base__, object)
        x = A()
        self.assertIs(type(x), A)
        self.assertIs(x.__class__, A)

        class B:
            def ham(self):
                return 'ham%d' % self
        C = type('C', (B, int), {'spam': lambda self: 'spam%s' % self})
        self.assertEqual(C.__name__, 'C')
        self.assertEqual(C.__module__, __name__)
        self.assertEqual(C.__bases__, (B, int))
        self.assertIs(C.__base__, int)
        self.assertIn('spam', C.__dict__)
        self.assertNotIn('ham', C.__dict__)
        x = C(42)
        self.assertEqual(x, 42)
        self.assertIs(type(x), C)
        self.assertIs(x.__class__, C)
        self.assertEqual(x.ham(), 'ham42')
        self.assertEqual(x.spam(), 'spam42')
        self.assertEqual(x.bit_length(), 6)