[DiapDealer]

Also, a heads-up to all that Python 3.6 absolutely detests tuples with null elements. For future compatibility, consider not using code like:

EDIT: never mind ... I remembered the issue wrong. The issue was empty/Null first elements in tuple that can cause problems in 3.6+. But only in freaky os.execvp() commands that you probably won't run into. Sorry for any confusion.