There is already https://pypi.org/project/sentinel/ https://pypi.org/project/sentinels/ Though, I think this should become part of the standard library. It's a fundamental concept, somewhat analogous to namedtuples, enums and dataclass (only a bit less used, but also less complex). Once figured out, the implementation will be very stable. I believe it's not good to depend for such small and stable functionality on third party packages. At least, I'd often then just stay with the sentinel = object() approach. I think https://peps.python.org/pep-0661/ is going very much in the right direction. Will continue discussing in this context.
Matthias Görgens <matthias.goergens@gmail.com> hat am 31.08.2023 11:29 CEST geschrieben:
Seems nice. Just write a library and upload it to one of the usual places?