On Thu, Jun 4, 2015, at 09:47, Steven D'Aprano wrote: > In other words, according to this Java philosophy, following `x = 23`, > the > value of x is not 23 like any sane person would expect, but some > invisible > and unknown, and unknowable, reference to 23.
Well, no, because, in Java, if the type of x is int, then the value really is 23. If it's Integer, then it's a reference to a boxed Integer object. Which is (thankfully) immutable. But isn't invisible, unknown, or unknowable at all. Of course, in CPython, the type of an object reference is PyObject *. Which isn't invisible, unknown, or unknowable, either. If the value really were 23, the "is vs ==" problem wouldn't exist. x = 500 y = x+1 z = y-1 x and z (probably) point to two different objects. -- https://mail.python.org/mailman/listinfo/python-list
