Functions · interview question

Which naming or modeling choice is strongest for return values?

Multiple choiceMediumchapter-2-curatedpremiumfunctionsreturn-values

python

def discount_rate(is_vip: bool, subtotal: float) -> float:
    if is_vip and subtotal >= 100:
        return 0.15
    return 0.0

Keep return values implicit so the script stays short and hope the next engineer infers the rule.Use names and structures that describe the business fact directly instead of temporary implementation noise.Solve the symptom with comments only and avoid changing the code shape around return values.Delay clarity until production traffic reveals the edge case and then patch it under pressure.

Answer and explanation

Correct answer

B. Use names and structures that describe the business fact directly instead of temporary implementation noise.

Why

Clear naming and modeling shorten debugging, review, and onboarding time.

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Which naming or modeling choice is strongest for return values?

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