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from typing import Annotated, Union
from fastapi import Body, FastAPI, status
from fastapi.responses import JSONResponse
app = FastAPI()
items = {"foo": {"name": "Fighters", "size": 6}, "bar": {"name": "Tenders", "size": 3}}
@app.put("/items/{item_id}")
async def upsert_item(
item_id: str,
name: Annotated[Union[str, None], Body()] = None,
size: Annotated[Union[int, None], Body()] = None,
):
if item_id in items:
item = items[item_id]
item["name"] = name
item["size"] = size
return item
else:
item = {"name": name, "size": size}
items[item_id] = item
return JSONResponse(status_code=status.HTTP_201_CREATED, content=item)
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