### `pydantic-settings`'i kurun { #install-pydantic-settings }

Önce, [Sanal ortam](../virtual-environments.md) oluşturduğunuzdan, aktive ettiğinizden emin olun ve ardından `pydantic-settings` paketini kurun:

<div class="termy">

```console
$ pip install pydantic-settings
---> 100%
```

</div>

    private static final String NON_JSON = /(non_json)/
    private static final String TEST_SYNTAX =
        /(?:$CATCH|$SUBSTITUTION|$SKIP_REGEX|(continued)|$SETUP|$TEARDOWN|$WARNING|(skip_shard_failures)) ?/

    /**
     * Action to take on each snippet. Called with a single parameter, an
     * instance of Snippet.
     */
    @Internal
    Closure perSnippet

    /**

        size(), SPLITERATOR_CHARACTERISTICS | Spliterator.SIZED) {
      final UnmodifiableIterator<E> iterator = iterator();

      @Override
      public boolean tryAdvance(Consumer<? super E> action) {
        if (iterator.hasNext()) {
          action.accept(iterator.next());
          return true;
        } else {
          return false;
        }
      }

      @Override

Cela pourrait être **Docker** directement, **Docker Compose**, **Kubernetes**, un **service cloud**, etc.

Dans la plupart (ou toutes) des situations, il existe une option simple pour activer l'exécution du conteneur au démarrage et activer les redémarrages en cas d'échec. Par exemple, dans Docker, c'est l'option de ligne de commande `--restart`.

* **Document** the API using OpenAPI:
    * which is then used by the automatic interactive documentation user interfaces.

This might all sound abstract. Don't worry. You'll see all this in action in the [Tutorial - User Guide](tutorial/index.md).

The important thing is that by using standard Python types, in a single place (instead of adding more classes, decorators, etc), **FastAPI** will do a lot of the work for you.

本例中，因为使用的是 Bearer Token，该响应头的值应为 `Bearer`。

实际上，忽略这个附加响应头，也不会有什么问题。

之所以在此提供这个附加响应头，是为了符合规范的要求。

说不定什么时候，就有工具用得上它，而且，开发者或用户也可能用得上。

这就是遵循标准的好处...

///

## 实际效果 { #see-it-in-action }

打开交互式文档：[http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs)。

### 身份验证 { #authenticate }

点击“Authorize”按钮。

使用以下凭证：

用户名：`johndoe`

密码：`secret`

        if (creationTime == null) {
            return -1;
        }
        return System.currentTimeMillis() - creationTime;
    }

    /**
     * Force rotation of all active keys
     *
     * @return number of keys rotated
     */
    public int forceRotateAllKeys() {
        checkNotClosed();

        int rotated = 0;

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all
      other entities that control, are controlled by, or are under common
      control with that entity. For the purposes of this definition,
      "control" means (i) the power, direct or indirect, to cause the

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all
      other entities that control, are controlled by, or are under common
      control with that entity. For the purposes of this definition,
      "control" means (i) the power, direct or indirect, to cause the

Podrías poner esas configuraciones en otro archivo de módulo como viste en [Aplicaciones Más Grandes - Múltiples Archivos](../tutorial/bigger-applications.md).

Por ejemplo, podrías tener un archivo `config.py` con:

{* ../../docs_src/settings/app01_py310/config.py *}

Y luego usarlo en un archivo `main.py`:

{* ../../docs_src/settings/app01_py310/main.py hl[3,11:13] *}