On Sun, Jun 5, 2016, at 04:01, Marko Rauhamaa wrote: > You could also think of variables as pegs, references as leashes, and > objects as cute puppies. One puppy could be held with multiple leashes > hung on separate pegs. Some puppies hold leashes in their mouths. Every > leash is tied to a puppy or a special wooden post called None.
You've got it all wrong about what's special about None. The object is just another puppy. There *is* a variable called None [getattr(__builtins__, 'None')] which holds a leash tied to that puppy, but it's rarely used, since everyone knows how to find that puppy directly [None is a keyword]. But nothing's special about the object itself, no more than any other object. Of course, as the fact that I had to use __builtins__ shows, the "pegs" are a fiction. At least, as long as we consider that frames and modules are just another kind of puppy. Though I suppose technically frames are an implementation detail. -- https://mail.python.org/mailman/listinfo/python-list
