fastapi

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from typing import Annotated
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from fastapi import Body, FastAPI
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from pydantic import BaseModel
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app = FastAPI()
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class Item(BaseModel):
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    name: str
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    description: str | None = None
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    price: float
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    tax: float | None = None
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@app.put("/items/{item_id}")
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async def update_item(
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    *,
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    item_id: int,
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    item: Annotated[
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        Item,
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        Body(
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            examples=[
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                {
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                    "name": "Foo",
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                    "description": "A very nice Item",
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                    "price": 35.4,
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                    "tax": 3.2,
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                },
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                {
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                    "name": "Bar",
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                    "price": "35.4",
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                },
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                {
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                    "name": "Baz",
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                    "price": "thirty five point four",
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                },
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            ],
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        ),
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    ],
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):
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    results = {"item_id": item_id, "item": item}
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    return results
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