MeritKeep

Scope and closures

Which name refers to what, and when. Includes the late-binding closure — why a list of functions built in a loop can all end up seeing the last value.

advanced~2hWe mark it against a checklist you can read first
The barWhat counts as knowing this

Predict which value a nested function sees, and fix a late-binding closure

That sentence is the bar. It only counts once your work shows you can do it. Reading about it does not.
Prove itA check for this one skill

Up to 2 questions on this skill alone, marked against the bar beside this. It stops as soon as the answer is clear. No account, and your answers are not kept.

01 · Prerequisites

You'll need these first

02 · Also helpful

Helpful, but not required

Start on Python Fundamentals

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