FastAPI

A modern, fast web framework for building APIs with Python based on standard Python type hints. High performance, easy to learn, and ready for production.

Website Docs GitHub

1 Guidelines

1 Categories

v0.115.0 Latest

Async Patterns

Never Block the Async Event Loop

Never use blocking operations in async endpoints. Blocking calls like time.sleep(), requests.get(), or synchronous database queries will block the entire event loop.

intermediate 7 min read

API Access

Access these guidelines programmatically through our JSON API.

GET


/api/v1/frameworks/fastapi/_index.json

View full API docs →