Message 126665 - Python tracker

test.regrtest is rather old and has not been updated to take advantage of all the latest features in unittest (e.g., test discovery). It might be a rather large undertaking with various bits requiring some changes (e.g., getting away from raising exceptions for skipped tests and instead using unittest.skipIf), but for maintainability it might be good to try to use as much unittest code in regrtest as possible.