En ese caso, se aplicarán a todas las *path operations* en la aplicación:

{* ../../docs_src/dependencies/tutorial012_an_py39.py hl[17] *}

        TF2 by enabling tracking of nested keras models created in TF1-style,
        when used with the `tf.compat.v1.keras.utils.track_tf1_style_variables`
        decorator.
    *   Added a `tf.keras.layers.experimental.preprocessing.HashedCrossing`
        layer which applies the hashing trick to the concatenation of crossed

Bei einigen Anwendungstypen möchten Sie möglicherweise Abhängigkeiten zur gesamten Anwendung hinzufügen.

Ähnlich wie Sie [`dependencies` zu den *Pfadoperation-Dekoratoren* hinzufügen](dependencies-in-path-operation-decorators.md){.internal-link target=_blank} können, können Sie sie auch zur `FastAPI`-Anwendung hinzufügen.

In diesem Fall werden sie auf alle *Pfadoperationen* in der Anwendung angewendet:

# 全局依赖项

有时，我们要为整个应用添加依赖项。

通过与定义[*路径装饰器依赖项*](dependencies-in-path-operation-decorators.md){.internal-link target=_blank} 类似的方式，可以把依赖项添加至整个 `FastAPI` 应用。

这样一来，就可以为所有*路径操作*应用该依赖项：

{* ../../docs_src/dependencies/tutorial012.py hl[15] *}

[*路径装饰器依赖项*](dependencies-in-path-operation-decorators.md){.internal-link target=_blank} 一章的思路均适用于全局依赖项， 在本例中，这些依赖项可以用于应用中的所有*路径操作*。

## 为一组路径操作定义依赖项

  * Si también declaras dependencias en una *path operation* específica, **también se ejecutarán**.
  * Las dependencias del router se ejecutan primero, luego las [dependencias en el decorador](dependencies/dependencies-in-path-operation-decorators.md){.internal-link target=_blank}, y luego las dependencias de parámetros normales.

    * Se você também declarar dependências em uma *operação de rota* específica, **elas também serão executadas**.
    * As dependências do roteador são executadas primeiro, depois as [`dependencies` no decorador](dependencies/dependencies-in-path-operation-decorators.md){.internal-link target=_blank} e, em seguida, as dependências de parâmetros normais.

[*경로 작동 데코레이터*에 `dependencies` 추가하기](dependencies-in-path-operation-decorators.md){.internal-link target=_blank}와 유사한 방법으로 `FastAPI` 애플리케이션에 그것들을 추가할 수 있습니다.

그런 경우에, 애플리케이션의 모든 *경로 작동*에 적용될 것입니다:

{* ../../docs_src/dependencies/tutorial012_an_py39.py hl[16] *}

그리고 [*경로 작동 데코레이터*에 `dependencies` 추가하기](dependencies-in-path-operation-decorators.md){.internal-link target=_blank}에 대한 아이디어는 여전히 적용되지만 여기에서는 앱에 있는 모든 *경로 작동*에 적용됩니다.

* die Anwendung bereitstellen
* die Seite ausliefern

* die App
* die Anwendung

* der Request
* die Response
* die Error-Response

* die Pfadoperation
* der Pfadoperation-Dekorator
* die Pfadoperation-Funktion

* der Body
* der Requestbody
* der Responsebody
* der JSON-Body
* der Formularbody
* der Dateibody
* der Funktionskörper

* der Parameter

    * Puedes tener objetos JSON profundamente **anidados** y validarlos todos y anotarlos.
* **Extensible**:
    * Pydantic permite definir tipos de datos personalizados o puedes extender la validación con métodos en un modelo decorados con el decorador validator.

             following code:

             <u style="text-decoration-style:solid">from </u><u style="text-decoration-style:solid"><b>main</b></u><u style="text-decoration-style:solid"> import </u><u style="text-decoration-style:solid"><b>app</b></u>