Several PDF-based tutorials and comprehensive guides are available for FastAPI, ranging from basic introductory slides to advanced e-books. Direct PDF Tutorial Downloads
@app.get("/users/user_id") def read_user(user_id: int): try: # simulate an error if user_id < 0: raise HTTPException(status_code=400, detail="Invalid user ID") return "user_id": user_id except Exception as e: raise HTTPException(status_code=500, detail=str(e))The official documentation at fastapi.tiangolo.com is the best resource. While there is no single "official PDF" released by the creator (Sebastián Ramírez), the docs are open-source and available on GitHub. fastapi tutorial pdf