I am not executing tests to perform import error detection. That was before refactoring tools got better. I was executing tests to check for import errors because it doesn't rely on full coverage on every method. It relies on all modules being imported by tested modules. That is easy to do even if you are too lazy to test every module. Just put an empty test function in all of them and pytest will detect them recursively. Given all that, I would avoid executing manual grep commands. However, you have a valid point for configuration files. Especially log configs need to be checked.