Exceptions · interview question

What is the healthiest performance judgment around error translation?

Multiple choiceHardchapter-5-curatedpremiumexceptionserror-translation

python

try:
    response = {"subtotal": "bad-number"}
    subtotal = float(response["subtotal"])
except ValueError as error:
    raise RuntimeError("partner payload used invalid subtotal") from error

Solve the symptom with comments only and avoid changing the code shape around error translation.Delay clarity until production traffic reveals the edge case and then patch it under pressure.Measure before optimizing, then change the part that actually dominates cost instead of guessing from style alone.Keep error translation implicit so the script stays short and hope the next engineer infers the rule.

Answer and explanation

Correct answer

C. Measure before optimizing, then change the part that actually dominates cost instead of guessing from style alone.

Why

Premature optimization is usually weaker than targeted optimization backed by measurement.

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What is the healthiest performance judgment around error translation?

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