On 22/12/2020 00:52, Christopher Barker wrote:
On Mon, Dec 21, 2020 at 3:37 PM Greg Ewing <greg.ewing@canterbury.ac.nz> wrote:
> However, that ship has sailed. I think it would have been minimally
> disruptive when True and False were first introduced,

It would have been just as disruptive back then -- that's the
reason bool was made a subclass of int in the first place.

I know why, but I'm not so sure -- no one was using a built in True or False as an integer, because they didn't exist. I suppose folks were using the results of, e.g.  `a == b` as an integer, but how often? Where else is an explicit True or False returned by Python itself?

The `bool` function, of course, `in`, `is` and `isinstance`, `str.isdigit`, ..., `threading.Lock.acquire`. Quite a few if you search for "return PyBool_".

Except for counting (with `sum`), I don't think you would use any of those arithmetically. But there's this kind of thing:

>>> [f"{n+1} {g}{(n>0)*'s'}" for n, g in enumerate(gifts)][::-1]
['4 calling birds', '3 french hens', '2 turtle doves', '1 partridge in a pear tree']

Go on, you know you want to.