Per the discussion in the comments on [this commit](f17d43b033 (commitcomment-10780649)), this PR allows the Python lint script to reuse `pep8.py` when possible.
Author: Nicholas Chammas <nicholas.chammas@gmail.com>
Closes#5561 from nchammas/save-dem-pep8-bytes and squashes the following commits:
b7c91e6 [Nicholas Chammas] reuse pep8.py