from fastapi import FastAPI

from pydantic import BaseModel, Field

app = FastAPI()

class Item(BaseModel):

name: str = Field(..., example="Foo")

description: str = Field(None, example="A very nice Item")

price: float = Field(..., example=35.4)

tax: float = Field(None, example=3.2)

@app.put("/items/{item_id}")

async def update_item(*, item_id: int, item: Item):

results = {"item_id": item_id, "item": item}

return results