fastapi

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from fastapi import FastAPI
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from pydantic import BaseModel, Field
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app = FastAPI()
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class Item(BaseModel):
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    name: str = Field(examples=["Foo"])
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    description: str | None = Field(default=None, examples=["A very nice Item"])
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    price: float = Field(examples=[35.4])
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    tax: float | None = Field(default=None, examples=[3.2])
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@app.put("/items/{item_id}")
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async def update_item(item_id: int, item: Item):
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    results = {"item_id": item_id, "item": item}
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    return results
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