On Mon, May 1, 2023 at 10:15 AM SeongJae Park <sj@xxxxxxxxxx> wrote: > [snip] > > > > It seems like support for the subscript wasn't added until Python 3.9. > > > > I know support for subscripting other types like re.Pattern was added > > in 3.9 per https://peps.python.org/pep-0585/ but it doesn't mention > > Popen there... > > This patch also added typing.IO[str] and concurrent.Future[None], so > > those might be problematic too. > > > > Can you check if the typing.IO and concurrent.Future[None] changes > > cause problems? > > (I don't have an easy way of testing against older Python versions currently). > > Thank you for quick reply. Reverting Popen changes only as below fixed my > issue. So seems typing.IO and concurrent.Future[None] chages doesn't cause > problems at least for my use case. Sounds good. Sent https://lore.kernel.org/linux-kselftest/20230501181610.2617032-1-dlatypov@xxxxxxxxxx I was hoping adding `--python-version 3.7` to the `mypy --strict` invocation would help, but it still fails for me :\ $ ./tools/testing/kunit/run_cheks.py ... mypy: FAILED > kunit_kernel.py:95: error: Missing type parameters for generic type "Popen" [type-arg] > kunit_kernel.py:116: error: Missing type parameters for generic type "Popen" [type-arg] > kunit_kernel.py:145: error: Missing type parameters for generic type "Popen" [type-arg] > Found 3 errors in 1 file (checked 8 source files) And here I was, hoping it would complain about code incompatible with python 3.7... But at the very least, that patch should fix the current problem. Daniel