Few things are as distracting as those god-awful side quests.

In this case, I had to search out all of the examples in my new book drafts.

I was asked to review code that -- well -- was evil.

Not like "shabby" or "non-pythonic". Nothing so simple as that.

We'll get to the evil in a moment. First, we have to suffer two horrible indignities.

1. Busy Waiting
2. Undefined Post-Conditions.

We'll beat all three issues to death separately, starting with …