Detalles sobre la sintaxis `async def` para *path operation functions* y algunos antecedentes sobre el código asíncrono, la concurrencia y el paralelismo.

## ¿Con prisa? { #in-a-hurry }

<abbr title="too long; didn't read"><strong>TL;DR:</strong></abbr>

Si estás usando paquetes de terceros que te dicen que los llames con `await`, como:

```Python
results = await some_library()
```

그리고 일반적인 `def` *경로 작동 함수* 안에 `async def`로 의존성을 선언할 수 있으며, `async def` *경로 작동 함수* 안에 `def`로 의존성을 선언하는 등의 방법이 있습니다.

아무 문제 없습니다. **FastAPI**는 무엇을 할지 알고 있습니다.

/// note | 참고

잘 모르시겠다면, [Async: *"In a hurry?"*](../../async.md){.internal-link target=_blank} 문서에서 `async`와 `await`에 대해 확인할 수 있습니다.

///

## OpenAPI와 통합

모든 요청 선언, 검증과 의존성(및 하위 의존성)에 대한 요구 사항은 동일한 OpenAPI 스키마에 통합됩니다.

      meet the following conditions:

      (a) You must give any other recipients of the Work or
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      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
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produce it from the Program, in the form of source code under the
terms of section 4, provided that you also meet all of these conditions:

    a) The work must carry prominent notices stating that you modified
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{* ../../docs_src/first_steps/tutorial003_py39.py hl[7] *}

/// note | Nota

Se você não sabe a diferença, verifique o [Async: *"Com pressa?"*](../async.md#in-a-hurry){.internal-link target=_blank}.

///

### Passo 5: retorne o conteúdo { #step-5-return-the-content }

{* ../../docs_src/first_steps/tutorial001_py39.py hl[8] *}

{* ../../docs_src/first_steps/tutorial003_py39.py hl[7] *}

/// note | Nota

Si no sabes la diferencia, Revisa la sección [Async: *"¿Tienes prisa?"*](../async.md#in-a-hurry){.internal-link target=_blank}.

///

### Paso 5: retorna el contenido { #step-5-return-the-content }

{* ../../docs_src/first_steps/tutorial001_py39.py hl[8] *}

      meet the following conditions:

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      (b) You must cause any modified files to carry prominent notices
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      (c) You must retain, in the Source form of any Derivative Works
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      meet the following conditions:

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      meet the following conditions:

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      (b) You must cause any modified files to carry prominent notices
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      (c) You must retain, in the Source form of any Derivative Works
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      meet the following conditions:

      (a) You must give any other recipients of the Work or
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      (b) You must cause any modified files to carry prominent notices
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      (c) You must retain, in the Source form of any Derivative Works
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