Understanding FastAPI: How OpenAPI works

• OpenAPI-Specification

  45 28,769 9.2 Markdown

  The OpenAPI Specification Repository

  

  If we go to the OpenAPI's repository, we'll see that:

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• swagger-ui

  140 26,295 9.7 JavaScript

  Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API.

  

  We already saw what is ASGI, how starlette works and how FastAPI extends starlatte. Now it's time to see how FastAPI offers one of the greatest features (in my opinion): Out of the box API docs with Swagger and Redoc.

• pydantic

  174 20,347 9.8 Python

  Data validation using Python type hints

  

  And here is where FastAPI ✨ shines: It leverages Pydantic powerful data validation to offer out of the box JSON Schema and OpenAPI specs via Swagger and Redoc.

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