On Sat, Aug 6, 2016 at 11:55 AM, Steven D'Aprano <steve+pyt...@pearwood.info> wrote: >>> * `True`, `False` and None instead of `true`, `false` and `none` (they >>> seems classes) >> >> This one, I've no idea about. Why have "bool" as the type, and "True" >> and "False" as the instances? I think the built-in types have their >> names grandfathered in from when they were factory functions, but that >> doesn't explain the capitalized instances. (And the type of None is >> NoneType, just to confuse the matter further.) > > Read the PEP: > > https://www.python.org/dev/peps/pep-0285/ > > 3) Should the constants be called 'True' and 'False' (similar to > None) or 'true' and 'false' (as in C++, Java and C99)? > > => True and False. > > Most reviewers agree that consistency within Python is more > important than consistency with other languages. >
That answers the question about True and False, but not about None, which started the question. Why are instances capitalized here? Is it simply a matter of grandfathering in, with no specific decision? ChrisA -- https://mail.python.org/mailman/listinfo/python-list
