Method test_positional_only

Lib/test/test_functools.py:744–749

(self)

            self.assertFalse(getattr(func, '__isabstractmethod__', False))

    def test_positional_only(self):
        def f(a, b, /):
            return a + b

        p = functools.partial(f, 1)
        self.assertEqual(p(2), f(1, 2))

    def test_subclass_optimization(self):
        class PartialMethodSubclass(functools.partialmethod):