* `summary`: Kurze Beschreibung für das Beispiel.
* `description`: Eine lange Beschreibung, die Markdown-Text enthalten kann.
* `value`: Dies ist das tatsächlich angezeigte Beispiel, z. B. ein `dict`.
* `externalValue`: Alternative zu `value`, eine URL, die auf das Beispiel verweist. Allerdings wird dies möglicherweise nicht von so vielen Tools unterstützt wie `value`.

Sie können es so verwenden:

<img src="/img/tutorial/path-params/image01.png">

/// check | 检查

还是使用 Python 类型声明，**FastAPI** 提供了（集成 Swagger UI 的）自动交互式文档。

注意，路径参数的类型是整数。

///

## 基于标准的好处，备选文档 { #standards-based-benefits-alternative-documentation }

**FastAPI** 使用 [OpenAPI](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md) 生成概图，所以能兼容很多工具。

*[Fess Site Search](https://github.com/codelibs/fess-site-search)* ist eine kostenlose Alternative zur [Google Site Search](https://enterprise.google.com/search/products/gss.html). Weitere Details finden Sie in der [Dokumentation des FSS JS Generators](https://fss-generator.codelibs.org/docs/manual).

## Website

  - resources/index.md
  - help-fastapi.md
  - contributing.md
  - project-generation.md
  - external-links.md
  - newsletter.md
  - management-tasks.md
- About:
  - about/index.md
  - alternatives.md
  - history-design-future.md
  - benchmarks.md
  - management.md
- release-notes.md
markdown_extensions:
  material.extensions.preview:
    targets:
      include:
      - '*'
  abbr: null

{* ../../docs_src/events/tutorial003_py310.py hl[22] *}

## Альтернативные события (устаревшие) { #alternative-events-deprecated }

/// warning | Предупреждение

 * might be absent" as two distinct types in your program, which can aid clarity.
 *
 * <p>Some uses of this class include
 *
 * <ul>
 *   <li>As a method return type, as an alternative to returning {@code null} to indicate that no
 *       value was available
 *   <li>To distinguish between "unknown" (for example, not present in a map) and "known to have no

            c[ci++] = '|';
            NL.getChars(0, NL_LENGTH, c, ci);
            ci += NL_LENGTH;
        } while (si < length);

        ps.println(c);
    }

    /**
     * This is an alternative to the <code>java.lang.Integer.toHexString</code>
     * method. It is an efficient relative that also will pad the left side so
     * that the result is <code>size</code> digits.
     *

    }

    return stream
  }

  @Throws(IOException::class)
  internal fun writeHeaders(
    streamId: Int,
    outFinished: Boolean,
    alternating: List<Header>,
  ) {
    writer.headers(outFinished, streamId, alternating)
  }

  /**
   * Callers of this method are not thread safe, and sometimes on application threads. Most often,

   * href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/package-summary.html#Spurious">
   * fail spuriously</a> and does not provide ordering guarantees, so is only rarely an appropriate
   * alternative to {@code compareAndSet}.
   *
   * @param expect the expected value
   * @param update the new value
   * @return {@code true} if successful
   */

- **Documenter** le paramètre dans la *chemin d'accès* du schéma OpenAPI (il apparaîtra donc dans l’**interface de documentation automatique**)

## Alternative (ancienne) : `Query` comme valeur par défaut { #alternative-old-query-as-the-default-value }