FastAPI系列：请求体映射

请求体映射

from typing import Union
from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()

class Item(BaseModel):
    name: str
    price: float
    is_offer: Union[bool, None] = None

@app.put("/items/{item_id}")
def update_item(item_id: int, item: Item):  #item将作为json传参,并自动映射到Item模型类中
    return {'item_name': item.name, "item_id": item_id}