```Python
item: Item = Body(embed=True)
```

так же, как в этом примере:

=== "Python 3.10+"

    ```Python hl_lines="17"
    {!> ../../../docs_src/body_multiple_params/tutorial005_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="17"
    {!> ../../../docs_src/body_multiple_params/tutorial005_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="18"

            ),
            performanceTest.steps.items.map(BuildStep::name)
        )

        val expectedRunnerParams = listOf(
            "-PperformanceBaselines=%performance.baselines%",
            "-PtestJavaVersion=17",
            "-PtestJavaVendor=openjdk",
            "-PautoDownloadAndroidStudio=true",
            "-PrunAndroidStudioInHeadlessMode=true",
            "-Porg.gradle.java.installations.auto-download=false",

But FastAPI also supports using <a href="https://docs.python.org/3/library/dataclasses.html" class="external-link" target="_blank">`dataclasses`</a> the same way:

```Python hl_lines="1  7-12  19-20"
{!../../../docs_src/dataclasses/tutorial001.py!}
```

# By default, build TF in C++ 17 mode.
build:android --cxxopt=-std=c++17
build:android --host_cxxopt=-std=c++17
build:ios --cxxopt=-std=c++17
build:ios --host_cxxopt=-std=c++17
build:linux --cxxopt=-std=c++17
build:linux --host_cxxopt=-std=c++17
build:macos --cxxopt=-std=c++17
build:macos --host_cxxopt=-std=c++17
build:windows --cxxopt=/std:c++17
build:windows --host_cxxopt=/std:c++17

E você também pode declarar parâmetros de corpo como opcionais, definindo o valor padrão com `None`:

=== "Python 3.10+"

    ```Python hl_lines="17-19"
    {!> ../../../docs_src/body_multiple_params/tutorial001_py310.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="19-21"
    {!> ../../../docs_src/body_multiple_params/tutorial001.py!}
    ```

=== "Pydantic v2"

    ```Python hl_lines="17-22  24"
    {!> ../../../docs_src/path_operation_advanced_configuration/tutorial007.py!}
    ```

=== "Pydantic v1"

    ```Python hl_lines="17-22  24"
    {!> ../../../docs_src/path_operation_advanced_configuration/tutorial007_pv1.py!}
    ```

!!! info

    {!> ../../../docs_src/dependencies/tutorial002_an.py!}
    ```

=== "Python 3.10+ non-Annotated"

    !!! tip
        Prefer to use the `Annotated` version if possible.

    ```Python hl_lines="17"
    {!> ../../../docs_src/dependencies/tutorial002_py310.py!}
    ```

=== "Python 3.8+ non-Annotated"

    !!! tip
        Prefer to use the `Annotated` version if possible.

# 响应头

## 使用 `Response` 参数

你可以在你的*路径操作函数*中声明一个`Response`类型的参数（就像你可以为cookies做的那样）。

然后你可以在这个*临时*响应对象中设置头部。
```Python hl_lines="1  7-8"
{!../../../docs_src/response_headers/tutorial002.py!}
```

然后你可以像平常一样返回任何你需要的对象（例如一个`dict`或者一个数据库模型）。如果你声明了一个`response_model`，它仍然会被用来过滤和转换你返回的对象。

**FastAPI**将使用这个临时响应来提取头部（也包括cookies和状态码），并将它们放入包含你返回的值的最终响应中，该响应由任何`response_model`过滤。

你也可以在依赖项中声明`Response`参数，并在其中设置头部（和cookies）。

## 直接返回 `Response`

Change Log
==========

## Version 4.x

See [4.x Change log](https://square.github.io/okhttp/changelogs/changelog_4x/) for the stable version changelogs.

## Version 5.0.0-alpha.14

_2024-04-17_

 *  Breaking: Move coroutines extensions to okhttp3.coroutines. Previously this artifact shared the
    `okhttp3` package name with our core module, which is incompatible with the Java Platform Module
    System.

  tasks.withType<JavaCompile> {
    options.encoding = Charsets.UTF_8.toString()
  }

  configure<JavaPluginExtension> {
    toolchain {
      languageVersion.set(JavaLanguageVersion.of(17))
    }
  }

  tasks.withType<Checkstyle>().configureEach {
    exclude("**/CipherSuite.java")
  }

  val checkstyleConfig: Configuration by configurations.creating
  dependencies {