Method __new__

Lib/test/test_descr.py:497–499

(cls, name, bases, dict)

        self.assertEqual(d.__class__, D)
        class M1(type):
            def __new__(cls, name, bases, dict):
                dict['__spam__'] = 1
                return type.__new__(cls, name, bases, dict)
        class C(metaclass=M1):
            pass
        self.assertEqual(C.__spam__, 1)