Everything in Python & FastAPI, page 13
Python Data Classes: Write Less Boilerplate
Python's @dataclass decorator writes boilerplate code like __init__ and __repr__ for you, turning a class with type hints into a data container. Use it for API payloads or simple records.
Python Type Hints: Documentation Your Linter Can Read
Type hints describe expected values, but Python itself does not enforce them while running. Static checkers and IDEs use the annotations before execution; libraries such as FastAPI can also inspect them for validation and API documentation.
Top 10 FastAPI interview questions for senior roles
FastAPI interview questions rarely test syntax. They probe whether you understand its three pillars: ASGI powered async concurrency, Pydantic validation at the request boundary, and the Depends dependency injection graph that wires services together.
Async SQLAlchemy 2.0: the mental model that clicks
SQLAlchemy's async layer bridges its synchronous ORM internals to asyncio. Use AsyncSession and AsyncEngine with an async driver, and await database work. Prerequisites: Python asyncio and basic SQLAlchemy ORM; lazy relationships must be loaded explicitly to avoid implicit I/O errors.
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