Measured 2026-09-10, compiler 98b6545b4652

def two(a, b):
    return "a=%s b=%s" % (type(a).__name__, b)

class C:
    plain = two

c = C()
print(c.plain(7))

C.plain(7) — through the class rather than an instance — agrees in both.

Why it is worth recording rather than leaving implicit

It is the reason staticmethod exists at all. A reader of test/test_nilpy_staticmethod_as_a_value.npy will ask why the unwrapped control is only exercised through the class, and this is the answer; the test's header says so and points here. Asserting the instance row against a CPython-generated oracle would be a row that is red by construction, which is why it is filed rather than tested.

Not a wrong ANSWER, and that matters for the ranking

We refuse where CPython succeeds, with a message naming the arity. Nothing computes a wrong value, and nobody gets a silently mis-shifted argument list. That is what puts it at 40 rather than higher — it fails the way a missing feature should fail.