1from datetime import datetime 2from typing import Optional 3 4from fastapi import FastAPI 5from fastapi.encoders import jsonable_encoder 6from fastapi.responses import JSONResponse 7from pydantic import BaseModel 8 9 10class Item(BaseModel): 11 title: str 12 timestamp: datetime 13 description: Optional[str] = None 14 15 16app = FastAPI() 17 18 19@app.put("/items/{id}") 20def update_item(id: str, item: Item): 21 json_compatible_item_data = jsonable_encoder(item) 22 return JSONResponse(content=json_compatible_item_data) 23