```Python hl_lines="7"
{!../../docs_src/query_params_str_validations/tutorial006b.py!}
```

/// info

如果你之前没见过 `...` 这种用法：它是一个特殊的单独值，它是 <a href="https://docs.python.org/3/library/constants.html#Ellipsis" class="external-link" target="_blank">Python 的一部分并且被称为「省略号」</a>。
Pydantic 和 FastAPI 使用它来显式的声明需要一个值。

///

这将使 **FastAPI** 知道此查询参数是必需的。

### 使用`None`声明必需参数

你可以声明一个参数可以接收`None`值，但它仍然是必需的。这将强制客户端发送一个值，即使该值是`None`。

<a href="https://en.wikipedia.org/wiki/XML" class="external-link" target="_blank">XML</a>レスポンスを返したいとしましょう。

XMLを文字列にし、`Response` に含め、それを返します。

```Python hl_lines="1  18"
{!../../docs_src/response_directly/tutorial002.py!}
```

## 備考

`Response` を直接返す場合、バリデーションや、変換 (シリアライズ) や、自動ドキュメントは行われません。

しかし、[Additional Responses in OpenAPI](additional-responses.md){.internal-link target=_blank}に記載されたようにドキュメントを書くこともできます。

{{- if eq .Values.service.type "LoadBalancer" }} Minio can be accessed via port {{ .Values.service.port }} on an external IP address. Get the service external IP address by: kubectl get svc --namespace {{ .Release.Namespace }} -l app={{ template "minio.fullname" . }} Note that the public IP may take a couple of minutes to be available. You can now access Minio server on http://<External-IP>:9000. Follow the below steps to connect to Minio server with mc client: 1. Download the Minio mc client - h...

 * @author Chris Povirk
 * @since 15.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public final class UrlEscapers {
  private UrlEscapers() {}

  // For each xxxEscaper() method, please add links to external reference pages
  // that are considered authoritative for the behavior of that escaper.

  static final String URL_FORM_PARAMETER_OTHER_SAFE_CHARS = "-_.*";

  static final String URL_PATH_OTHER_SAFE_CHARS_LACKING_PLUS =

extraVolumes: [] ## Additional volumeMounts to minio container extraVolumeMounts: [] ## Additional sidecar containers extraContainers: [] ## Internal port number for MinIO S3 API container ## Change service.port to change external port number minioAPIPort: "9000" ## Internal port number for MinIO Browser Console container ## Change consoleService.port to change external port number minioConsolePort: "9001" ## Update strategy for Deployments deploymentUpdate: type: RollingUpdate maxUnavailable: 0 maxSurge:...

extraVolumes: [] ## Additional volumeMounts to minio container extraVolumeMounts: [] ## Additional sidecar containers extraContainers: [] ## Internal port number for MinIO S3 API container ## Change service.port to change external port number minioAPIPort: "9000" ## Internal port number for MinIO Browser Console container ## Change consoleService.port to change external port number minioConsolePort: "9001" ## Update strategy for Deployments deploymentUpdate: type: RollingUpdate maxUnavailable: 0 maxSurge:...

extraVolumes: [] ## Additional volumeMounts to minio container extraVolumeMounts: [] ## Additional sidecar containers extraContainers: [] ## Internal port number for MinIO S3 API container ## Change service.port to change external port number minioAPIPort: "9000" ## Internal port number for MinIO Browser Console container ## Change consoleService.port to change external port number minioConsolePort: "9001" ## Update strategy for Deployments deploymentUpdate: type: RollingUpdate maxUnavailable: 0 maxSurge:...

extraVolumes: [] ## Additional volumeMounts to minio container extraVolumeMounts: [] ## Additional sidecar containers extraContainers: [] ## Internal port number for MinIO S3 API container ## Change service.port to change external port number minioAPIPort: "9000" ## Internal port number for MinIO Browser Console container ## Change consoleService.port to change external port number minioConsolePort: "9001" ## Update strategy for Deployments DeploymentUpdate: type: RollingUpdate maxUnavailable: 0 maxSurge:...

したがって、以下の行:

```Python
    uvicorn.run(app, host="0.0.0.0", port=8000)
```

は実行されません。

/// info | "情報"

より詳しい情報は、<a href="https://docs.python.org/3/library/__main__.html" class="external-link" target="_blank">公式Pythonドキュメント</a>を参照してください。

///

## デバッガーでコードを実行

コードから直接Uvicornサーバーを実行しているため、デバッガーから直接Pythonプログラム (FastAPIアプリケーション) を呼び出せます。

---

例えば、Visual Studio Codeでは、次のことが可能です:

Você pode escrever <a href="https://en.wikipedia.org/wiki/Markdown" class="external-link" target="_blank">Markdown</a> na docstring, ele será interpretado e exibido corretamente (levando em conta a indentação da docstring).

//// tab | Python 3.8 and above

```Python hl_lines="19-27"