auto_error: Annotated[
            bool,
            Doc(
                """
                By default, if the HTTP Basic authentication is not provided (a
                header), `HTTPBasic` will automatically cancel the request and send the
                client an error.

                If `auto_error` is set to `False`, when the HTTP Basic authentication

            bool,
            Doc(
                """
                By default, if no HTTP Authorization header is provided, required for
                OAuth2 authentication, it will automatically cancel the request and
                send the client an error.

                If `auto_error` is set to `False`, when the HTTP Authorization header

---

Par exemple, dans Visual Studio Code, vous pouvez :

- Cliquer sur l'onglet "Debug" de la barre d'activités de Visual Studio Code.
- "Add configuration...".
- Sélectionnez "Python".
- Lancez le <abbr title="En anglais: debugger">débogueur</abbr> avec l'option "`Python: Current File (Integrated Terminal)`".

Il démarrera alors le serveur avec votre code **FastAPI**, s'arrêtera à vos points d'arrêt, etc.

```Python hl_lines="3-16  18"
{!../../../docs_src/metadata/tutorial004.py!}
```

Notice that you can use Markdown inside of the descriptions, for example "login" will be shown in bold (**login**) and "fancy" will be shown in italics (_fancy_).

!!! tip
    You don't have to add metadata for all the tags that you use.

### Use your tags

tags_metadata = [
    {
        "name": "users",
        "description": "Operations with users. The **login** logic is also here.",
    },
    {
        "name": "items",
        "description": "Manage items. So _fancy_ they have their own docs.",
        "externalDocs": {
            "description": "Items external docs",
            "url": "https://fastapi.tiangolo.com/",
        },
    },
]

                "description": "Operations with users. The **login** logic is also here.",
            },
            {
                "name": "items",
                "description": "Manage items. So _fancy_ they have their own docs.",
                "externalDocs": {
                    "description": "Items external docs",
                    "url": "https://fastapi.tiangolo.com/",
                },
            },

```Python hl_lines="3-16  18"
{!../../../docs_src/metadata/tutorial004.py!}
```

Помните, что вы можете использовать Markdown внутри описания, к примеру "login" будет отображен жирным шрифтом (**login**) и "fancy" будет отображаться курсивом (_fancy_).

!!! tip "Подсказка"
    Вам необязательно добавлять метаданные для всех используемых тегов

### Используйте собственные теги

    * Dites-moi comment vous utilisez FastAPI (j'adore entendre ça).
    * Entendre quand je fais des annonces ou que je lance de nouveaux outils.
* <a href="https://www.linkedin.com/in/tiangolo/" class="external-link" target="_blank">Vous connectez à moi sur **LinkedIn**</a>.
    * Etre notifié quand je fais des annonces ou que je lance de nouveaux outils (bien que j'utilise plus souvent Twitter 🤷‍♂).

    ```Python hl_lines="1"
    async def needy_dependency(fresh_value: str = Depends(get_value, use_cache=False)):
        return {"fresh_value": fresh_value}
    ```

## Recap

Apart from all the fancy words used here, the **Dependency Injection** system is quite simple.

Just functions that look the same as the *path operation functions*.

Para retornar ao cliente *responses* HTTP com erros, use o `HTTPException`.

### Import `HTTPException`

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

### Lance o `HTTPException` no seu código.

`HTTPException`, ao fundo, nada mais é do que a conjunção entre uma exceção comum do Python e informações adicionais relevantes para APIs.