Question
When should a Python developer choose FastAPI, Pydantic, and Request Validation deliberately?
- Use typed models when building APIs that should reject invalid input early and keep transport shape separate from deeper business logic.
- Choose FastAPI, Pydantic, and Request Validation mainly when you want to postpone validation and fix issues manually later.
- Choose FastAPI, Pydantic, and Request Validation whenever you want the code to look more advanced, even if the design gets less clear.
- Choose FastAPI, Pydantic, and Request Validation only to avoid modeling the real data shape or domain contract explicitly.
Hint
Think about the production scenario where the choice genuinely improves the code.
Answer and rationale
Correct answer: A. Use typed models when building APIs that should reject invalid input early and keep transport shape separate from deeper business logic.
Use typed models when building APIs that should reject invalid input early and keep transport shape separate from deeper business logic. Interviewers often ask this to see whether you can connect the concept to real design decisions.
Track: Python