[mjr00]

> Also, for some reason Optional[T] became deprecated, just as the ecosystem finally embraced types ~3 years ago.

Optional[T] is now T | None. Means exactly the same thing but doesn't require an import. Support for the older syntax presumably won't be removed for a long while regardless.

[apelapan]

It is only pyright/basedpyright that flags Optional[T] as deprecated as far as I am aware. Optional isn't actually deprecated by Python or anyone else.

You can disable it in the pyright settings. In my opinion T | None is not a meaningful improvement and insisting on changing it everywhere causes a whole bunch of churn and needlessly makes code stop working on older Python versions.

[wizzwizz4]

Optional[T] was always just an abbreviation for Union[T, None], anyway: it's unsurprising that they didn't choose to give it its own syntax.