{!> ../../../docs_src/response_model/tutorial004_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="11  13-14"
    {!> ../../../docs_src/response_model/tutorial004_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="11  13-14"
    {!> ../../../docs_src/response_model/tutorial004.py!}
    ```

以下も、バックエンドに許可させるかどうか指定できます:

* クレデンシャル情報 (認証ヘッダー、Cookieなど) 。
* 特定のHTTPメソッド (`POST`、`PUT`) またはワイルドカード `"*"` を使用してすべて許可。
* 特定のHTTPヘッダー、またはワイルドカード `"*"`を使用してすべて許可。

```Python hl_lines="2  6-11  13-19"
{!../../../docs_src/cors/tutorial001.py!}
```

`CORSMiddleware` 実装のデフォルトのパラメータはCORSに関して制限を与えるものになっているので、ブラウザにドメインを跨いで特定のオリジン、メソッド、またはヘッダーを使用可能にするためには、それらを明示的に有効にする必要があります

以下の引数がサポートされています:

    }.also { expected ->
      assertThat(expected.message)
        .isEqualTo("PROTOCOL_ERROR: FLAG_COMPRESSED without SETTINGS_COMPRESS_DATA")
    }
  }

  @Test fun readPaddedDataFrame() {
    val dataLength = 1123
    val expectedData = ByteArray(dataLength)
    Arrays.fill(expectedData, 2.toByte())
    val paddingLength = 254
    val padding = ByteArray(paddingLength)
    Arrays.fill(padding, 0.toByte())

并且两种模型都将在交互式 API 文档中使用：

<img src="https://fastapi.tiangolo.com/img/tutorial/response-model/image02.png">

## 响应模型编码参数

你的响应模型可以具有默认值，例如：

```Python hl_lines="11  13-14"
{!../../../docs_src/response_model/tutorial004.py!}
```

* `description: Union[str, None] = None` 具有默认值 `None`。
* `tax: float = 10.5` 具有默认值 `10.5`.
* `tags: List[str] = []` 具有一个空列表作为默认值： `[]`.

  // For example, a handler called "runc" might specify that the runc OCI
  // runtime (using native Linux containers) will be used to run the containers
  // in a pod.
  // The Handler must be lowercase, conform to the DNS Label (RFC 1123) requirements,
  // and is immutable.
  optional string handler = 2;

  // overhead represents the resource overhead associated with running a pod for a
  // given RuntimeClass. For more details, see

  // runtime (using native Linux containers) will be used to run the containers
  // in a pod.
  // The runtimeHandler must be lowercase, conform to the DNS Label (RFC 1123)
  // requirements, and is immutable.
  optional string runtimeHandler = 1;

  // overhead represents the resource overhead associated with running a pod for a
  // given RuntimeClass. For more details, see

* Update Windows development environment instructions. PR [#1179](https://github.com/tiangolo/fastapi/pull/1179).

## 0.53.0

* Update test coverage badge. PR [#1175](https://github.com/tiangolo/fastapi/pull/1175).

* Restores the pre-1.10 behavior of the openstack cloud provider which uses the instance name as the Kubernetes Node name. This requires instances be named with RFC-1123 compatible names. ([#63903](https://github.com/kubernetes/kubernetes/pull/63903), [@liggitt](https://github.com/liggitt))

    - [Node Binaries](#node-binaries-13)
  - [Changelog since v1.17.3](#changelog-since-v1173)
  - [Changes by Kind](#changes-by-kind-14)
    - [API Change](#api-change-4)
    - [Other (Bug, Cleanup or Flake)](#other-bug-cleanup-or-flake)
- [v1.17.3](#v1173)
  - [Downloads for v1.17.3](#downloads-for-v1173)
    - [Client Binaries](#client-binaries-14)
    - [Server Binaries](#server-binaries-14)

  // externalName is the external reference that discovery mechanisms will
  // return as an alias for this service (e.g. a DNS CNAME record). No
  // proxying will be involved.  Must be a lowercase RFC-1123 hostname
  // (https://tools.ietf.org/html/rfc1123) and requires `type` to be "ExternalName".
  // +optional
  optional string externalName = 10;