FastAPI has a powerful Dependency Injection system. This allows you to share logic, enforce security, or handle database connections easily. from fastapi import Depends
/docs: Interactive API documentation provided by Swagger UI. You can call your API endpoints directly from the browser. /redoc: Alternative API documentation provided by ReDoc. Path Parameters and Query Parameters fastapi tutorial pdf
@app.get("/items/{item_id}")def read_item(item_id: int, q: str = None):return {"item_id": item_id, "q": q} To run the application, use the following command: uvicorn main:app --reload FastAPI has a powerful Dependency Injection system
FastAPI is built on top of Starlette for the web parts and Pydantic for the data parts. It is designed to be easy to use for developers while providing production-grade performance. Key features include: You can call your API endpoints directly from the browser
To save this tutorial as a PDF, you can use your browser's "Print" function (Ctrl+P or Cmd+P) and select "Save as PDF" as the destination. This will allow you to keep this guide as a handy reference for your future FastAPI projects.