Method __init__

Lib/test/test_set.py:730–732

(self, arg, newarg=None)

        class subclass_with_init(set):
            def __init__(self, arg, newarg=None):
                super().__init__(arg)
                self.newarg = newarg
        u = subclass_with_init([1, 2], newarg=3)
        self.assertIs(type(u), subclass_with_init)
        self.assertEqual(set(u), {1, 2})