code: def delete_item(item_id: str, item: Item):
      return {"item_id": item_id, "item": item}
  
imports: from typing import Optional
  from dirty_equals import IsDict
  from fastapi import FastAPI
  from fastapi.responses import JSONResponse
  from fastapi.testclient import TestClient
  from pydantic import BaseModel
label_desc: Use image node_id 3 for calling a global function with example usage: delete_item(item_id, item) and returns: dict