Perhaps professor was fed up with over-commenting (comments made up a large part of submitted code), especially if comments were like in https://news.ycombinato

Perhaps professor was fed up with over-commenting (comments made up a large part of submitted code), especially if comments were like in https://news.ycombinator.com/item?id=41506466 https://news.ycombinator.com/item?id=41506466. Unless the course is "practical software engineering" or similar, that good programming practices are a focus, and if the why/why-not parts can contribute to better assessment, an associated paper can be asked.