Pylint 2.0.0 improves old checks and brings up new checkers which found some erros in IPA code.
https://pylint.readthedocs.io/en/latest/whatsnew/2.0.html

New Py3 compatibility checkers:

• exception-message-attribute (Exception.message removed in Python 3)
• eq-without-hash

New useful checkers:

• overlapping-except
• useless-super-delegation (performance)
• redefined-argument-from-local (error prone code)
• consider-merging-isinstance (readability)
• literal-comparison (error prone)

And also it provides quite a lot false positive reports, but usually in parts hard to read even for human.