Hug ajudou a inspirar o **FastAPI** a usar anotações de tipo do Python para declarar parâmetros e para gerar um schema definindo a API automaticamente.

Hug inspirou **FastAPI** a declarar um parâmetro de `response` em funções para definir cabeçalhos e cookies.

///

### [APIStar](https://github.com/encode/apistar) (<= 0.5) { #apistar-0-5 }

 *       typically because the type forbids nullable type arguments: For example, {@code
 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)
 *   <li>methods whose return type is a type variable but which can return {@code null} regardless
 *       of the type argument supplied by the user of the class: For example, {@code

 *       typically because the type forbids nullable type arguments: For example, {@code
 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)
 *   <li>methods whose return type is a type variable but which can return {@code null} regardless
 *       of the type argument supplied by the user of the class: For example, {@code

```console
$ pip install jinja2

---> 100%
```

</div>

## Using `Jinja2Templates` { #using-jinja2templates }

* Import `Jinja2Templates`.
* Create a `templates` object that you can reuse later.
* Declare a `Request` parameter in the *path operation* that will return a template.

Il devrait ressembler exactement à un *chemin d'accès* FastAPI normal :

* Il devrait probablement déclarer le corps qu’il doit recevoir, par exemple `body: InvoiceEvent`.
* Et il pourrait aussi déclarer la réponse qu’il doit renvoyer, par exemple `response_model=InvoiceEventReceived`.

{* ../../docs_src/openapi_callbacks/tutorial001_py310.py hl[14:16,19:20,26:30] *}

## Імпорт `Header` { #import-header }

Спочатку імпортуйте `Header`:

{* ../../docs_src/header_params/tutorial001_an_py310.py hl[3] *}

## Оголошення параметрів `Header` { #declare-header-parameters }

Потім оголосіть параметри заголовків, використовуючи ту ж структуру, що й для `Path`, `Query` та `Cookie`.

クッキーのパラメータは、`Query`や`Path`のパラメータを定義するのと同じ方法で定義できます。

## `Cookie`をインポート { #import-cookie }

まず、`Cookie`をインポートします:

{* ../../docs_src/cookie_params/tutorial001_an_py310.py hl[3] *}

## `Cookie`のパラメータを宣言 { #declare-cookie-parameters }

次に、`Path`や`Query`と同じ構造を使ってクッキーのパラメータを宣言します。

最初の値がデフォルト値で、追加の検証パラメータや注釈パラメータをすべて渡すことができます:

{* ../../docs_src/cookie_params/tutorial001_an_py310.py hl[9] *}

/// note | 技術詳細

   *
   * (That would also have ensured that its cause was always an Error, rather than possibly another
   * kind of Throwable that was later passed to initCause. Then we could have declared the override
   * `public final Error getCause()`.)
   */

  /**
   * Creates a new instance with {@code null} as its detail message and no cause.
   *

---> 100%
```

</div>

## Utiliser `Jinja2Templates` { #using-jinja2templates }

- Importez `Jinja2Templates`.
- Créez un objet `templates` que vous pourrez réutiliser par la suite.
- Déclarez un paramètre `Request` dans le *chemin d'accès* qui renverra un template.

ps-of-path-operations }

Más adelante, al leer sobre cómo estructurar aplicaciones más grandes ([Aplicaciones Más Grandes - Múltiples Archivos](../../tutorial/bigger-applications.md)), posiblemente con múltiples archivos, aprenderás cómo declarar un solo parámetro de `dependencies` para un grupo de *path operations*....