```JSON
{
    "name": "Foo",
    "price": 50.2
}
```

/// info | "Информация"

"Под капотом" FastAPI использует метод `.dict()` у объектов моделей Pydantic <a href="https://docs.pydantic.dev/latest/concepts/serialization/#modeldict" class="external-link" target="_blank">с параметром `exclude_unset`</a>, чтобы достичь такого эффекта.

///

/// info | "Информация"

Вы также можете использовать:

Como a lista é o tipo que contém algum tipo interno, você coloca o tipo dentro de colchetes:

```Python hl_lines="4"
{!> ../../docs_src/python_types/tutorial006.py!}
```

////

/// info | Informação

Estes tipos internos dentro dos colchetes são chamados "parâmetros de tipo" (type parameters).

Neste caso, `str` é o parâmetro de tipo passado para `List` (ou `list` no Python 3.9 ou superior).

///

                    buf.append('{');
                    appendJson("id", entity.getId(), buf).append(',');
                    appendJson("query-id", entity.getQueryId(), buf).append(',');
                    appendJson("user-info-id", entity.getUserInfoId(), buf).append(',');
                    appendJson("user-session-id", entity.getUserSessionId(), buf).append(',');
                    appendJson("user", entity.getUser(), buf).append(',');

### Executar o App

Você pode executar o app:

<div class="termy">

```console
$ fastapi dev main.py

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

```Python
{!> ../../docs_src/python_types/tutorial011_py39.py!}
```

////

//// tab | Python 3.8+

```Python
{!> ../../docs_src/python_types/tutorial011.py!}
```

////

/// info

Um mehr über <a href="https://pydantic-docs.helpmanual.io/" class="external-link" target="_blank">Pydantic zu erfahren, schauen Sie sich dessen Dokumentation an</a>.

///

这些安全方案在使用 OAuth2 时，还可以声明和使用作用域。

**作用域**只是（不带空格的）字符串。

常用于声明特定安全权限，例如：

* 常见用例为，`users:read` 或 `users:write`
* 脸书和 Instagram 使用 `instagram_basic`
* 谷歌使用 `https://www.googleapis.com/auth/drive`

/// info | "说明"

OAuth2 中，**作用域**只是声明特定权限的字符串。

是否使用冒号 `:` 等符号，或是不是 URL 并不重要。

这些细节只是特定的实现方式。

对 OAuth2 来说，它们都只是字符串而已。

///

## 全局纵览

                    logger.info("Sent {} docs (Doc:{process {}ms, send {}ms, size {}}, {})", docList.size(), docList.getProcessingTime(),
                            systemHelper.getCurrentTimeAsLong() - execTime, MemoryUtil.byteCountToDisplaySize(docList.getContentSize()),
                            MemoryUtil.getMemoryUsageLog());
                } else {

		pi, k8sErr = getK8sPodInfo(kClient, podName, podNamespace)
		if k8sErr == nil {
			break
		}
		log.Debugf("Failed to get %s/%s pod info: %v", podNamespace, podName, k8sErr)
		time.Sleep(podRetrievalInterval)
	}
	if k8sErr != nil {
		log.Errorf("Failed to get %s/%s pod info: %v", podNamespace, podName, k8sErr)
		return k8sErr
	}

	// Check if istio-init container is present; in that case exclude pod

<img src="/img/tutorial/path-operation-configuration/image02.png">

## 响应描述

`response_description` 参数用于定义响应的描述说明：

```Python hl_lines="21"
{!../../docs_src/path_operation_configuration/tutorial005.py!}
```

/// info | "说明"

注意，`response_description` 只用于描述响应，`description` 一般则用于描述*路径操作*。

///

/// check | "检查"

OpenAPI 规定每个*路径操作*都要有响应描述。

如果没有定义响应描述，**FastAPI** 则自动生成内容为 "Successful response" 的响应描述。

///

def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/files/": {
                "post": {
                    "responses": {
                        "200": {