FastAPI中的部分更新

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()

class Item(BaseModel):
    name: str
    price: float
    description: str

inventory = {
    "item_id": {
        "name": "Example Item",
        "price": 9.99,
        "description": "This is an example item."
    }
}

@app.patch("/items/{item_id}")
async def update_item(item_id: str, item: Item):
    if item_id in inventory:
        updated_fields = item.dict(exclude_unset=True)
        inventory[item_id].update(updated_fields)
        return {"message": "Item updated successfully"}
    else:
        return {"message": "Item not found"}