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32 lines
810 B
Python
32 lines
810 B
Python
import random
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from typing import Union
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from fastapi import FastAPI
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from pydantic import AfterValidator
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from typing_extensions import Annotated
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app = FastAPI()
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data = {
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"isbn-9781529046137": "The Hitchhiker's Guide to the Galaxy",
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"imdb-tt0371724": "The Hitchhiker's Guide to the Galaxy",
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"isbn-9781439512982": "Isaac Asimov: The Complete Stories, Vol. 2",
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}
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def check_valid_id(id: str):
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if not id.startswith(("isbn-", "imdb-")):
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raise ValueError('Invalid ID format, it must start with "isbn-" or "imdb-"')
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return id
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@app.get("/items/")
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async def read_items(
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id: Annotated[Union[str, None], AfterValidator(check_valid_id)] = None,
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):
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if id:
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item = data.get(id)
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else:
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id, item = random.choice(list(data.items()))
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return {"id": id, "name": item}
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