fastapi-conventions/comparison/fastapi-vs-python.md

FastAPI vs Python

Use this to capture places where FastAPI/Starlette conventions deliberately differ from broader Python guidance.

Examples to watch for:

• DI through callables and annotations instead of explicit constructor wiring
• framework-facing Pydantic models at transport boundaries
• async-first request handlers even when core logic stays sync
• startup/lifespan hooks instead of plain context management entrypoints