"required": ["item1", "item2"],
                    "type": "object",
                    "properties": {
                        "item1": {"$ref": "#/components/schemas/Item"},
                        "item2": {"$ref": "#/components/schemas/Item"},
                    },
                },
                "Body_foo_post_router": {
                    "title": "Body_foo_post_router",

运行示例并访问 <a href="http://127.0.0.1:8000/items/3" class="external-link" target="_blank">http://127.0.0.1:8000/items/3</a>，返回的响应如下：

```JSON
{"item_id":3}
```

/// check | 检查

注意，函数接收并返回的值是 `3`（ `int`），不是 `"3"`（`str`）。

**FastAPI** 通过类型声明自动<abbr title="将来自 HTTP 请求中的字符串转换为 Python 数据类型">**解析**请求中的数据</abbr>。

///

## 数据校验

        final String[] arr = new String[4];
        dr.ttl = ref.getTtl();
        dr.rflags = ref.getRFlags();
        dr.expiration = expire;
        if ((dr.rflags & Trans2GetDfsReferralResponse.FLAGS_NAME_LIST_REFERRAL) == Trans2GetDfsReferralResponse.FLAGS_NAME_LIST_REFERRAL) {
            final String[] expandedNames = ref.getExpandedNames();
            if (expandedNames.length > 0) {

                                                {
                                                    "$ref": "#/components/schemas/PlaneItem"
                                                },
                                                {
                                                    "$ref": "#/components/schemas/CarItem"
                                                },
                                            ],

                            "description": "Successful Response",
                            "content": {
                                "application/json": {
                                    "schema": {"$ref": "#/components/schemas/Item"}
                                }
                            },
                        },
                        "422": {
                            "description": "Validation Error",

        </div>
        <section class="content">
            <div class="row">
                <div class="col-md-12">
                    <c:if test="${!displayCreateLink}">
                        <la:link href="/admin/fileconfig/" styleClass="btn btn-primary ${f:h(editableClass)}">
                            <i class="fa fa-arrow-circle-right" aria-hidden="true"></i>

 * </ul>
 *
 * <p>Consumers of this annotation include:
 *
 * <ul>
 *   <li>NullAway, which <a
 *       href="https://github.com/google/guava/issues/6126#issuecomment-1204399671">treats it
 *       identically to {@code Nullable}</a> as of version 0.9.9.
 *   <li><a href="https://developers.google.com/j2objc">J2ObjC</a>, maybe: It might no longer be

 * </ul>
 *
 * <p>Consumers of this annotation include:
 *
 * <ul>
 *   <li>NullAway, which <a
 *       href="https://github.com/google/guava/issues/6126#issuecomment-1204399671">treats it
 *       identically to {@code Nullable}</a> as of version 0.9.9.
 *   <li><a href="https://developers.google.com/j2objc">J2ObjC</a>, maybe: It might no longer be

Например:

* <a href="https://code.visualstudio.com/docs/python/environments#_select-and-activate-an-environment" class="external-link" target="_blank">VS Code</a>
* <a href="https://www.jetbrains.com/help/pycharm/creating-virtual-environment.html" class="external-link" target="_blank">PyCharm</a>

/// tip | Подсказка

도커는 **컨테이너 이미지**와 **컨테이너**를 생성하고 관리하는데 주요 도구 중 하나가 되어왔습니다.

그리고 <a href="https://hub.docker.com/" class="external-link" target="_blank">도커 허브</a>에 다양한 도구, 환경, 데이터베이스, 그리고 어플리케이션에 대해 미리 만들어진 **공식 컨테이너 이미지**가 공개되어 있습니다.

예를 들어, 공식 <a href="https://hub.docker.com/_/python" class="external-link" target="_blank">파이썬 이미지</a>가 있습니다.

또한 다른 대상, 예를 들면 데이터베이스를 위한 이미지들도 있습니다: