Is behavior of += intentional for int?

[Albert Hopkins]

On Sun, 2009-08-30 at 10:44 +0000, Steven D'Aprano wrote:
> It also follows from the idea that there is one abstract entity which 
> English speakers call "three" and write as 3. There's not two
> identical 
> entities with value 3, or four, or a million of them, only one.

That's not true.  There are many different 3s in all the parallel
universes. ;)

-a