しかし、Pythonには型や「タイプパラメータ」を使ってリストを宣言する方法があります:

### typingの`List`をインポート

まず、Pythonの標準の`typing`モジュールから`List`をインポートします:

{* ../../docs_src/body_nested_models/tutorial002.py hl[1] *}

### タイプパラメータを持つ`List`の宣言

`list`や`dict`、`tuple`のようなタイプパラメータ（内部の型）を持つ型を宣言するには:

* `typing`モジュールからそれらをインストールします。
* 角括弧（`[`と`]`）を使って「タイプパラメータ」として内部の型を渡します:

```Python
from typing import List

my_list: List[str]
```

型宣言の標準的なPythonの構文はこれだけです。

/// tip | 豆知識

`{"name", "description"}`の構文はこれら２つの値をもつ`set`を作成します。

これは`set(["name", "description"])`と同等です。

///

#### `set`の代わりに`list`を使用する

もし`set`を使用することを忘れて、代わりに`list`や`tuple`を使用しても、FastAPIはそれを`set`に変換して正しく動作します:

{* ../../docs_src/response_model/tutorial006.py hl[31,37] *}

## まとめ

*path operationデコレータの*`response_model`パラメータを使用して、レスポンスモデルを定義し、特にプライベートデータがフィルタリングされていることを保証します。

Es equivalente a `set(["name", "description"])`.

///

#### Usar `list`s en lugar de `set`s

Si olvidas usar un `set` y usas un `list` o `tuple` en su lugar, FastAPI todavía lo convertirá a un `set` y funcionará correctamente:

{* ../../docs_src/response_model/tutorial006_py310.py hl[29,35] *}

## Resumen

    assertThat(response.body.string()).isEqualTo("Hello response!")
    applicationLogs
      .assertLogEqual("--> POST $url")
      .assertLogEqual("--> END POST (duplex request body omitted)")
      .assertLogMatch(Regex("""<-- 200 $url \(\d+ms\)"""))
      .assertLogEqual("content-length: 15")
      .assertLogEqual("")
      .assertLogEqual("Hello response!")

        and `audio_dataset_from_directory`, to be used with the
        `validation_split` argument, for returning both dataset splits at once,
        as a tuple.
    *   Added `tf.keras.utils.split_dataset` utility to split a `Dataset` object
        or a list/tuple of arrays into two `Dataset` objects (e.g. train/test).
    *   Added step granularity to `BackupAndRestore` callback for handling

  /**
   * Default call timeout (in milliseconds). By default there is no timeout for complete calls, but
   * there is for the connect, write, and read actions within a call.
   *
   * For WebSockets and duplex calls the timeout only applies to the initial setup.
   */
  @get:JvmName("callTimeoutMillis")
  val callTimeoutMillis: Int = builder.callTimeout

"method","promise","fail","then","Callbacks","object","_","flag","firing","memory","fired","locked","list","queue","firingIndex","fire","once","stopOnFalse","remove","disable","lock","fireWith","Deferred","func","tuples","state","always","deferred","catch","pipe","fns","newDefer","tuple","returned","progress","notify","onFulfilled","onRejected","onProgress","maxDepth","depth","handler","special","that","mightThrow","TypeError","notifyWith","resolveWith","process","exceptionHook","rejectWith","ge...

"method","promise","fail","then","Callbacks","object","_","flag","firing","memory","fired","locked","list","queue","firingIndex","fire","once","stopOnFalse","remove","disable","lock","fireWith","Deferred","func","tuples","state","always","deferred","catch","pipe","fns","newDefer","tuple","returned","progress","notify","onFulfilled","onRejected","onProgress","maxDepth","depth","handler","special","that","mightThrow","TypeError","notifyWith","resolveWith","process","exceptionHook","rejectWith","ge...

	    * Note: this fixes some issues with the previous implementation of metrics for disks:

	      * Time duration tracked was of the initial API call, not the entire operation.

	      * Metrics label tuple would have resulted in many independent histograms stored, one for each disk. (Did not aggregate well).

* 📝 Tweak and improve docs for Request Files. PR [#4470](https://github.com/tiangolo/fastapi/pull/4470) by [@tiangolo](https://github.com/tiangolo).

### Fixes

* 🐛 Fix bug preventing to use OpenAPI when using tuples. PR [#3874](https://github.com/tiangolo/fastapi/pull/3874) by [@victorbenichoux](https://github.com/victorbenichoux).