Knowledge Check

Field validator evidence

While reviewing fastapi pydantic validation, a normalized code must be uppercase. Which action fixes it, and which check proves it worked?

What this task practices

Field validator evidence is a knowledge check interview exercise that trains prompt interpretation, explicit assumptions, a concrete response, and a clear explanation of tradeoffs. The catalog marks it as hard difficulty. It focuses on Fastapi Pydantic Validation, Field Validator. The signed-in workspace provides the tools for the round and evaluates the attempt against task-specific criteria. Reference solutions, hidden checks, evaluator instructions, and candidate work remain private.