> not knowing that Python does not do block-level variable scoping, so loop variables leak For what it's worth, it took me a long time to internalize this (mor

> not knowing that Python does not do block-level variable scoping, so loop variables leak For what it's worth, it took me a long time to internalize this (more than ten years after first learning Python), I think partly because the way most people teach Python is to say what scopes Python has instead of saying what scopes it doesn't have. While it's bad style to abuse this, I would definitely consider this a part of Python that a lot of working developers probably don't understand well.