[Python-Dev] Assign to errno allowed?

[Tim Peters]

[Brad Clements]
> ...
> I would like to remind folks that on some platforms, one cannot 
> just use "errno = 0". On those platforms calling a function is
> required to set errno.

Except that errno=0 works fine on any platform with a standard-
conforming C implementation, and this isn't even a fuzzy POSIX issue -- 
it's a requirement of the C standard.  We can define piles of macros 
instead, but I expect that, as the years drag on, people will "forget" 
to use them.