from fastapi import FastAPI from pydantic import BaseModel app = FastAPI() class Item(BaseModel): name: str price: float class ResponseMessage(BaseModel): message: str @app.post("/items/", response_model=ResponseMessage) async def create_item(item: Item): return {"message": "item received"} @app.get("/items/", response_model=list[Item]) async def get_items(): return [ {"name": "Plumbus", "price": 3}, {"name": "Portal Gun", "price": 9001}, ]