proc isNotImplemented(obj: PyObject): bool {....raises: [], tags: [], forbids: [].}

proc newPyNotImplementedObjectMagic(args: openArray[PyObject] = @[];
                                    kwargs: PyKwArgType = nil): PyObject {.
    cdecl, ...raises: [], tags: [RootEffect], forbids: [].}

proc reprPyNotImplementedObjectMagic(selfNoCast: PyObject): PyObject {.cdecl,
    ...raises: [], tags: [RootEffect], forbids: [].}

method `$`(self: PyNotImplementedObject): string {....raises: [], tags: [],
    forbids: [].}