__main__ is considered third party by isort

[Numerlor]

import os

import __main__
import third_party

import first_party

os.a
third_party.a
__main__.a
first_party.a

formatting the four imports results in the above order instead of

import os

import third_party

import __main__
import first_party

https://play.ruff.rs/e1e21a3a-5567-4c46-9f6d-5ef508551206

[charliermarsh]

It seems that isort does the same, but I guess that's also a bug?

[Ezrashaw]

I'd like to work on this. I assume that __main__ just has to be special-cased?

[charliermarsh]

That's right -- mostly likely in here:

ruff/crates/ruff_linter/src/rules/isort/categorize.rs

Line 68 in e306359

pub(crate) fn categorize<'a>(