> I don't believe there is any driving reason for them not to be hashable.

On the other hand, what is the use case for hashing objects whose
equality is defined as object identity?

Python 3.0 (r30:67503, Dec  4 2008, 06:47:38)
[GCC 4.3.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> range(10).__hash__
<method-wrapper '__hash__' of range object at 0x7f2d61dbd210>
>>> {range(10), range(10)}
{range(0, 10), range(0, 10)}

I can see only confusion arising from that.