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Stdle #139 · modern · 2026-10-23

What does this Python snippet output?

A past puzzle — fully playable. 4 attempts, hints on wrong guesses.

def make():
    n = 0
    def step():
        n += 1
        return n
    return step
s = make()
try:
    print(s())
except UnboundLocalError:
    print("UnboundLocalError")
Modern
4 attempts left

Answer & explanation