When CPython evaluates the implicit iter(c) below, the __getattribute__ override does NOT print for the __iter__ lookup, but the explicit attribute access does. What mechanism explains this?

class C: def __getattribute__(self, name): print('getattribute:', name) return object.__getattribute__(self, name) def __iter__(self): return iter([1, 2, 3]) c = C() c.__iter__ # prints 'getattribute: __iter__' list(iter(c)) # does NOT print for __iter__