builtin set literal

[bearophileHUGS at lycos.com]

Steven Bethard:
> take a look at the current state of tuples:
>    1, 2
>    1,
>    ()

That's not a good situation. I presume the situation/syntax of tuples
in Python 2.x can't be improved. But can it be improved for Py 3.0?
Notes:
- I think in Matlab a single element is seen as the same thing as an
array with len = 1.
- I think Ruby solves the problem of the list/tuple with a freezing
function/operator (like I suggested some time ago).

Bye,
bearophile