* **Standards-basiert**: Basierend auf (und vollständig kompatibel mit) den offenen Standards für APIs: <a href="https://github.com/OAI/OpenAPI-Specification" class="external-link" target="_blank">OpenAPI</a> und <a href="https://json-schema.org/" class="external-link" target="_blank">JSON Schema</a>.

    * **Robusto**: Tenha código pronto para produção. Com documentação interativa automática.
    * **Baseado em Padrões**: Baseado em (e completamente compatível com) padrões abertos para APIs: <a href="https://github.com/OAI/OpenAPI-Specification" class="external-link" target="_blank">OpenAPI</a> e <a href="http://json-schema.org/" class="external-link" target="_blank">JSON Schema</a>.

#### API "schema"

In this case, <a href="https://github.com/OAI/OpenAPI-Specification" class="external-link" target="_blank">OpenAPI</a> is a specification that dictates how to define a schema of your API.

This schema definition includes your API paths, the possible parameters they take, etc.

#### Data "schema"

    * **Basé sur des normes** : Basé sur (et totalement compatible avec) les normes ouvertes pour les APIs : <a href="https://github.com/OAI/OpenAPI-Specification" class="external-link" target="_blank">OpenAPI</a> et <a href="https://json-schema.org/" class="external-link" target="_blank">JSON Schema</a>.

] = WeakKeyDictionary()


def is_body_allowed_for_status_code(status_code: Union[int, str, None]) -> bool:
    if status_code is None:
        return True
    # Ref: https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.1.0.md#patterned-fields-1
    if status_code in {
        "default",
        "1XX",
        "2XX",
        "3XX",
        "4XX",
        "5XX",
    }:
        return True

```
## 有关OpenAPI响应的更多信息

要了解您可以在响应中包含哪些内容，您可以查看OpenAPI规范中的以下部分：
	+ [OpenAPI响应对象](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md#responsesObject)，它包括 Response Object 。

创建表单（`Form`）参数的方式与 `Body` 和 `Query` 一样：

```Python hl_lines="7"
{!../../../docs_src/request_forms/tutorial001.py!}
```

例如，OAuth2 规范的 "密码流" 模式规定要通过表单字段发送 `username` 和 `password`。

<abbr title="specification">该规范</abbr>要求字段必须命名为 `username` 和 `password`，并通过表单字段发送，不能用 JSON。

使用 `Form` 可以声明与 `Body` （及 `Query`、`Path`、`Cookie`）相同的元数据和验证。

!!! info "说明"

    `Form` 是直接继承自 `Body` 的类。

!!! tip "提示"

### Technical Details: `root_path`

When you mount a sub-application as described above, FastAPI will take care of communicating the mount path for the sub-application using a mechanism from the ASGI specification called a `root_path`.

That way, the sub-application will know to use that path prefix for the docs UI.

#### API-„Schema“

In diesem Fall ist  <a href="https://github.com/OAI/OpenAPI-Specification" class="external-link" target="_blank">OpenAPI</a> eine Spezifikation, die vorschreibt, wie ein Schema für Ihre API zu definieren ist.

Diese Schemadefinition enthält Ihre API-Pfade, die möglichen Parameter, welche diese entgegennehmen, usw.

    Notice that the path parameter is declared to be an integer.

## Standards-based benefits, alternative documentation

And because the generated schema is from the <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md" class="external-link" target="_blank">OpenAPI</a> standard, there are many compatible tools.