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from typing import Union
from fastapi import FastAPI
from pydantic import BaseModel, Field
app = FastAPI()
class Item(BaseModel):
name: str = Field(examples=["Foo"])
description: Union[str, None] = Field(default=None, examples=["A very nice Item"])
price: float = Field(examples=[35.4])
tax: Union[float, None] = Field(default=None, examples=[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
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