## `Security` em decoradores de `dependencies` { #security-in-decorator-dependencies }

Подробнее читайте в документации: [Зависимости с `yield` — раннее завершение и `scope`](../tutorial/dependencies/dependencies-with-yield.md#early-exit-and-scope).

### Зависимости с `yield` и `StreamingResponse`, технические детали { #dependencies-with-yield-and-streamingresponse-technical-details }

Você pode ler mais na documentação em [Dependências com `yield` - Saída antecipada e `scope`](../tutorial/dependencies/dependencies-with-yield.md#early-exit-and-scope).

### Dependências com `yield` e `StreamingResponse`, Detalhes Técnicos { #dependencies-with-yield-and-streamingresponse-technical-details }

Puedes leer más al respecto en la documentación de [Dependencias con `yield` - Salida temprana y `scope`](../tutorial/dependencies/dependencies-with-yield.md#early-exit-and-scope).

### Dependencias con `yield` y `StreamingResponse`, detalles técnicos { #dependencies-with-yield-and-streamingresponse-technical-details }

In the same way, you can use `finally` to make sure the exit steps are executed, no matter if there was an exception or not.

{* ../../docs_src/dependencies/tutorial007_py39.py hl[3,5] *}

## Sub-dependencies with `yield` { #sub-dependencies-with-yield }

You can have sub-dependencies and "trees" of sub-dependencies of any size and shape, and any or all of them can use `yield`.

{* ../../docs_src/dependencies/tutorial007_py39.py hl[2:4] *}

O valor gerado (yielded) é o que é injetado nas *operações de rota* e outras dependências:

{* ../../docs_src/dependencies/tutorial007_py39.py hl[4] *}

O código após o `yield` é executado após a resposta:

{* ../../docs_src/dependencies/tutorial007_py39.py hl[5:6] *}

/// tip | Dica

///

## 使用 `yield` 的数据库依赖项

例如，你可以使用这种方式创建一个数据库会话，并在完成后关闭它。

在发送响应之前，只会执行 `yield` 语句及之前的代码：

{* ../../docs_src/dependencies/tutorial007.py hl[2:4] *}

生成的值会注入到 *路由函数* 和其他依赖项中：

{* ../../docs_src/dependencies/tutorial007.py hl[4] *}

`yield` 语句后面的代码会在创建响应后，发送响应前执行：

{* ../../docs_src/dependencies/tutorial007.py hl[5:6] *}

/// tip | 提示

你可以使用 `async` 或普通函数。

**FastAPI** 会像处理普通依赖一样，对每个依赖做正确的处理。

///

{* ../../docs_src/dependencies/tutorial007_py39.py hl[2:4] *}

El valor generado es lo que se inyecta en *path operations* y otras dependencias:

{* ../../docs_src/dependencies/tutorial007_py39.py hl[4] *}

El código posterior a la declaración `yield` se ejecuta después del response:

{* ../../docs_src/dependencies/tutorial007_py39.py hl[5:6] *}

/// tip | Consejo

응답을 생성하기 전에는 `yield`문을 포함하여 그 이전의 코드만이 실행됩니다:

{* ../../docs_src/dependencies/tutorial007.py hl[2:4] *}

yield된 값은 *경로 작업* 및 다른 의존성들에 주입되는 값 입니다:

{* ../../docs_src/dependencies/tutorial007.py hl[4] *}

`yield`문 다음의 코드는 응답을 생성한 후 보내기 전에 실행됩니다:

{* ../../docs_src/dependencies/tutorial007.py hl[5:6] *}

/// tip | 팁

`async` 함수와 일반 함수 모두 사용할 수 있습니다.

例えば、これを使ってデータベースセッションを作成し、終了後にそれを閉じることができます。

レスポンスを送信する前に`yield`文を含む前のコードのみが実行されます。

{* ../../docs_src/dependencies/tutorial007.py hl[2,3,4] *}

生成された値は、*path operations*や他の依存関係に注入されるものです:

{* ../../docs_src/dependencies/tutorial007.py hl[4] *}

`yield`文に続くコードは、レスポンスが送信された後に実行されます:

{* ../../docs_src/dependencies/tutorial007.py hl[5,6] *}

/// tip | 豆知識

`async`や通常の関数を使用することができます。