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FastAPI · interview question

What is the clearest sign that code around validation should be refactored?

Multiple choiceMediumchapter-13-curatedpremiumfastapivalidation
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Answer and explanation

Correct answer

D. When the rule is no longer easy to trace, explain, or change without breaking nearby behavior.

Why

A refactor is justified when the code stops communicating its intent. Reject bad requests before the workflow invests more state and side effects into them.

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