On Jun 3, 2014, at 4:46 PM, Greg Ewing <greg.ewing@canterbury.ac.nz> wrote:

In other words, it's just syntactic sugar for an Objective-C method
call, and not a true keyword-argument system. Which is rather disappointing,
and doesn't help at all with interfacing to Python.

Or it is rather exactly precise, unlike keyword argument based systems.

(see the archives, this has been flogged to death about a zillion times in the 20 year -- yes 20! -- of PyObjC)