Python Internals · interview question
A bug appears around closures and scope. What is the strongest first debugging move?
Multiple choiceMediumchapter-19-curatedpremiumpython-internalsclosures-and-scope
def build_multiplier(factor: int):
def apply(value: int) -> int:
return value * factor
return applyAnswer and explanation
Correct answer
A. Trace one concrete example, inspect the state transitions, and compare them to the intended rule before rewriting anything.
Why
That approach is reliable because it creates evidence. If name binding and outer scope rules feel fuzzy, callback and decorator code becomes harder to debug.
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