Thanks for the quick reply!

I did not know the pep8 tool added it's own rules :( I have read PEP8 a long while ago and have since relied on the tool to do "the right thing". Many of it's idiosyncrasies have probably made their way into my blood since :(

And you're right: The PEP is actually explicitly saying that it's okay to leave out the white-space to make operator precedence more visible (for reference: http://legacy.python.org/dev/peps/pep-0008/#other-recommendations).

I will undo those changes.

Is there anything else that immediately caught your eye so I can address it in the update?