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  <a href="https://fastapi.tiangolo.com"><img src="https://fastapi.tiangolo.com/img/logo-margin/logo-teal.png" alt="FastAPI"></a>
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    FastAPI framework, zeer goede prestaties, eenvoudig te leren, snel te programmeren, klaar voor productie
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<p align="center">
    Framework FastAPI, alta performance, fácil de aprender, fácil de codar, pronto para produção
</p>
<p align="center">

../../docs_src/security/tutorial002_an_py310.py hl[19:22,26:27] *}
L36:
L37:## Injetar o usuário atual
L38:
L39:Então agora nós podemos usar o mesmo `Depends` com nosso `get_current_user` na *operação de rota*:
L40:
L41:{* ../../docs_src/security/tutorial002_an_py310.py hl[31] *}
L42:
L43:Observe que nós declaramos o tipo de `current_user` como o modelo Pydantic `User`.
L44:
L45:Isso nos ajudará dentro da função com todo o preenchimento automático e verificações de tipo.
L46:
L47:/// tip | Dica
L48:
...

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    FastAPI 框架，高效能，易於學習，快速開發，適用於生產環境
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# WebSockets

Puedes usar <a href="https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API" class="external-link" target="_blank">WebSockets</a> con **FastAPI**.

## Instalar `WebSockets`

Asegúrate de crear un [entorno virtual](../virtual-environments.md){.internal-link target=_blank}, activarlo e instalar `websockets`:

<div class="termy">

```console
$ pip install websockets

---> 100%
```

</div>

 * which is commonly used for Kerberos-based authentication in Windows environments.
 * It handles the negotiation between client and server to establish a secure
 * authentication context without requiring users to explicitly enter credentials.
 *
 * The authenticator supports various configuration options including delegation,
 * basic authentication fallback, and localhost authentication bypass.
 */

Y como la operación de escritura no usa `async` y `await`, definimos la función con un `def` normal:

{* ../../docs_src/background_tasks/tutorial001.py hl[6:9] *}

## Agregar la tarea en segundo plano

Dentro de tu *path operation function*, pasa tu función de tarea al objeto de *background tasks* con el método `.add_task()`:

{* ../../docs_src/background_tasks/tutorial001.py hl[14] *}

`.add_task()` recibe como argumentos: