Type Hints · interview question
A bug appears around function type hints. What is the strongest first debugging move?
Multiple choiceEasychapter-10-curatedpremiumtype-hintsfunction-type-hints
def shipping_fee(subtotal: float) -> float:
return 0 if subtotal >= 100 else 6.5Answer and explanation
Correct answer
D. 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. Mechanical hints that do not improve the contract still leave the reader guessing what the function really promises.
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