> I expect to get: ['-I'] instead of ['-s', '-E', '-I']

From what I understand, this can be done in one of two ways. First, we could edit https://github.com/python/cpython/blob/ad73a9cf97770023665a1bb1c6390a3c99478139/Modules/main.c#L430 and not incrementing -s and -E. But I believe this would have consequences that I'm unable to think of right now, so I'd like some inputs on this. 

Secondly, we could handle this condition in `_args_from_interpreted_flags()` itself but that might be looked upon as bad practice.