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  2. github.com/tiangolo/fastapi

    docs_src/query_params_str_validations/tutorial015_an_py310.py 

    import random
from typing import Annotated

from fastapi import FastAPI
from pydantic import AfterValidator

app = FastAPI()

data = {
    "isbn-9781529046137": "The Hitchhiker's Guide to the Galaxy",
    "imdb-tt0371724": "The Hitchhiker's Guide to the Galaxy",
    "isbn-9781439512982": "Isaac Asimov: The Complete Stories, Vol. 2",
}


def check_valid_id(id: str):
    if not id.startswith(("isbn-", "imdb-")):
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Sat Mar 01 22:02:35 GMT 2025
    - 768 bytes
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  3. github.com/tiangolo/fastapi

    docs/uk/docs/tutorial/query-params-str-validations.md 

    Це можна досягти за допомогою <a href="https://docs.pydantic.dev/latest/concepts/validators/#field-after-validator" class="external-link" target="_blank">Pydantic's `AfterValidator`</a> в середині `Annotated`.

/// tip | Підказка
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Fri May 30 14:17:24 GMT 2025
    - 26.1K bytes
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  4. github.com/tiangolo/fastapi

    docs/en/docs/tutorial/query-params-str-validations.md 

    You can achieve that using <a href="https://docs.pydantic.dev/latest/concepts/validators/#field-after-validator" class="external-link" target="_blank">Pydantic's `AfterValidator`</a> inside of `Annotated`.

/// tip

Pydantic also has <a href="https://docs.pydantic.dev/latest/concepts/validators/#field-before-validator" class="external-link" target="_blank">`BeforeValidator`</a> and others. 🤓
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Sat Dec 20 15:55:38 GMT 2025
    - 16.7K bytes
    - Click Count (0)
  5. github.com/tiangolo/fastapi

    docs/ru/docs/tutorial/query-params-str-validations.md 

    Этого можно добиться, используя <a href="https://docs.pydantic.dev/latest/concepts/validators/#field-after-validator" class="external-link" target="_blank">`AfterValidator` Pydantic</a> внутри `Annotated`.

/// tip | Совет
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Wed Dec 17 20:41:43 GMT 2025
    - 26.2K bytes
    - Click Count (0)
  6. github.com/tiangolo/fastapi

    docs/de/docs/tutorial/query-params-str-validations.md 

    Sie können dies mit <a href="https://docs.pydantic.dev/latest/concepts/validators/#field-after-validator" class="external-link" target="_blank">Pydantic's `AfterValidator`</a> innerhalb von `Annotated` erreichen.

/// tip | Tipp
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Wed Dec 24 10:28:19 GMT 2025
    - 19.1K bytes
    - Click Count (0)
  7. github.com/tiangolo/fastapi

    docs/pt/docs/tutorial/query-params-str-validations.md 

    Você pode fazer isso usando o <a href="https://docs.pydantic.dev/latest/concepts/validators/#field-after-validator" class="external-link" target="_blank">`AfterValidator` do Pydantic</a> dentro de `Annotated`.

/// tip | Dica
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Wed Dec 17 20:41:43 GMT 2025
    - 18.2K bytes
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