PEP 285: Adding a bool type

[John Roth]

"Martin v. Loewis" <martin at v.loewis.de> wrote in message
news:m3663dnisp.fsf at mira.informatik.hu-berlin.de...
> "John Roth" <johnroth at ameritech.net> writes:
>
> > I make it optimistically 180 functions. Given the reasonably
> > high quality of the standard library, "return None" almost
> > certainly means that the function does not have a return value,
> > not that the return value should be treated as False.
>
> Notice a subtlety, though: In a high-quality library, if the
> *function* has no return value, the return statement should be just
> "return". I'd always assume that the function would normally return an
> object, and that "return None" indicates that no object is available
> in this case. A quick glance shows that this indeed seems to be the
> case in the majority of the cases.

Good point. In that case, the result still isn't logically a boolean -
it's at least "True", "False" or "Huh?"

John Roth
>
> Regards,
> Martin
>