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# GET endpoint to retrieve a single item by ID @app.get("/items/item_id") def read_item(item_id: int): for item in items: if item["id"] == item_id: return item return "error": "Item not found"
oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token") fastapi tutorial pdf
: The definitive step-by-step guide maintained by the creator. # GET endpoint to retrieve a single item by ID @app
Used for filtering or optional data (e.g., /users?limit=10 ). 2. Data Validation with Pydantic fastapi tutorial pdf
A robust FastAPI tutorial PDF must explain the three main ways clients send data to your API.