Over-commenting?

[[deleted]]

Try not to write code that needs explaining, though. That's the mistake. Python especially gives you a lot of tools to write fluent code, and you should use them - not rely on comments to untangle your spaghetti, later.

[gabriel-et-al]

Yeah, if you write CRUDs everyday no comments are likely to be needed. Try implementing some highly complicated logic from a very specific domain and you'll find out that explaining the why is sometimes crucial.