from fastapi import FastAPI, Path, Query app = FastAPI() @app.get("/items/{item_id}") async def read_items( *, item_id: int = Path(title="The ID of the item to get", ge=0, le=1000), q: str, size: float = Query(gt=0, lt=10.5), ): results = {"item_id": item_id} if q: results.update({"q": q}) return results