```

////

//// tab | Python 3.8+ без Annotated

/// tip | "Подсказка"

Предпочтительнее использовать версию с аннотацией, если это возможно.

///

```Python
{!> ../../docs_src/security/tutorial001.py!}
```

////

## Запуск

/// info | "Дополнительная информация"

**FastAPI**将采用该模型，生成其`JSON Schema`并将其包含在`OpenAPI`中的正确位置。

例如，要声明另一个具有状态码 `404` 和`Pydantic`模型 `Message` 的响应，可以写：
```Python hl_lines="18  22"
{!../../docs_src/additional_responses/tutorial001.py!}
```

/// note

请记住，您必须直接返回 `JSONResponse` 。

///

/// info

`model` 密钥不是OpenAPI的一部分。
**FastAPI**将从那里获取`Pydantic`模型，生成` JSON Schema` ，并将其放在正确的位置。
- 正确的位置是：

당연하게 `Path`, `Query` 및 요청 본문 매개변수 선언을 자유롭게 혼합해서 사용할 수 있고, **FastAPI**는 어떤 동작을 할지 압니다.

또한, 기본 값을 `None`으로 설정해 본문 매개변수를 선택사항으로 선언할 수 있습니다.

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

/// note | "참고"

이 경우에는 본문으로 부터 가져온 `	item`은 기본값이 `None`이기 때문에, 선택사항이라는 점을 유의해야 합니다.

///

## 다중 본문 매개변수

이전 예제에서 보듯이, *경로 작동*은 아래와 같이 `Item` 속성을 가진 JSON 본문을 예상합니다:

```JSON
{

Then set Cookies in it, and then return it:

```Python hl_lines="10-12"
{!../../docs_src/response_cookies/tutorial001.py!}
```

/// tip

Keep in mind that if you return a response directly instead of using the `Response` parameter, FastAPI will return it directly.

```Python hl_lines="17"
{!../../docs_src/path_params/tutorial005.py!}
```

#### Get the *enumeration value*

You can get the actual value (a `str` in this case) using `model_name.value`, or in general, `your_enum_member.value`:

```Python hl_lines="20"
{!../../docs_src/path_params/tutorial005.py!}
```

/// tip

```Python hl_lines="17"
{!../../docs_src/path_params/tutorial005.py!}
```

#### Obtén el *enumeration value*

Puedes obtener el valor exacto (un `str` en este caso) usando `model_name.value`, o en general, `your_enum_member.value`:

```Python hl_lines="20"
{!../../docs_src/path_params/tutorial005.py!}
```

/// tip | Consejo

## Faites appel à `uvicorn`

Dans votre application FastAPI, importez et exécutez directement `uvicorn` :

```Python hl_lines="1  15"
{!../../docs_src/debugging/tutorial001.py!}
```

### À propos de `__name__ == "__main__"`

Le but principal de `__name__ == "__main__"` est d'avoir du code qui est exécuté lorsque votre fichier est appelé avec :

<div class="termy">

```console

```

////

//// tab | Python 3.8+ non-Annotated

/// tip | "Dica"

Faça uso da versão `Annotated` quando possível.

///

```Python hl_lines="4  25"
{!> ../../docs_src/additional_status_codes/tutorial001.py!}
```

////

/// warning | "Aviso"

Quando você retorna um `Response` diretamente, como no exemplo acima, ele será retornado diretamente.

Ele não será serializado com um modelo, etc.

////

//// tab | Python 3.8+ nicht annotiert

/// tip | "Tipp"

Bevorzugen Sie die `Annotated`-Version, falls möglich.

///

```Python hl_lines="4  25"
{!> ../../docs_src/additional_status_codes/tutorial001.py!}
```

////

/// warning | "Achtung"

Wenn Sie eine `Response` direkt zurückgeben, wie im obigen Beispiel, wird sie direkt zurückgegeben.

Sie wird nicht mit einem Modell usw. serialisiert.

Let's imagine you want to get the client's IP address/host inside of your *path operation function*.

For that you need to access the request directly.

```Python hl_lines="1  7-8"
{!../../docs_src/using_request_directly/tutorial001.py!}
```

By declaring a *path operation function* parameter with the type being the `Request` **FastAPI** will know to pass the `Request` in that parameter.

/// tip