How to exclude a line without the block it introduces?

[Apakottur]

I am working on a big project where we often use the the match statement like so:

match something:
    case type_1():
        logic_1()
    case type_2():
        logic_2():
    case _:
        assert_never(something)

In this code example the default case should never happen, but sometimes we also have:

match something:
    case type_1():
        logic_1()
    case type_2():
        logic_2():
    case _:
        print("Default case")

When running coverage, I want to exclude all the assert_never lines because they should never run, so I use this configuration option:

exclude_lines =
    assert_never

This removes these lines from the coverage report, but the case _ lines are still reported as missing.

If I do this:

exclude_lines =
    case _

Then the entire block is excluded, including the print statement, which I do want to ensure coverage on.

Another approach is to use the # pragma: no cover comment, but we have hundreds of these cases and that would be very inconvenient to use.

How can I configure coverage to exclude case _ when the only thing I have inside is assert_never, but not exclude it in other cases?