=== "Python 3.10 and above"

    ```Python hl_lines="15  20  25"
    {!> ../../../docs_src/path_operation_configuration/tutorial002_py310.py!}
    ```

Eles serão adicionados ao esquema OpenAPI e usados pelas interfaces de documentação automática:

<img src="/img/tutorial/path-operation-configuration/image01.png">

### Tags com Enums

    ---

    The `APIRouter`s are not "mounted", they are not isolated from the rest of the application.

    This is because we want to include their *path operations* in the OpenAPI schema and the user interfaces.

    As we cannot just isolate them and "mount" them independently of the rest, the *path operations* are "cloned" (re-created), not included directly.

## Check the automatic API docs

    * Generating **automatic errors** returned to the client when the data is invalid.
* **Document** the API using OpenAPI:
    * which is then used by the automatic interactive documentation user interfaces.

This might all sound abstract. Don't worry. You'll see all this in action in the [Tutorial - User Guide](tutorial/index.md){.internal-link target=_blank}.

**FastAPI** is based on **OpenAPI**.

That's what makes it possible to have multiple automatic interactive documentation interfaces, code generation, etc.

OpenAPI has a way to define multiple security "schemes".

By using them, you can take advantage of all these standard-based tools, including these interactive documentation systems.

**FastAPI** é baseado no **OpenAPI**.

Isso é o que torna possível ter múltiplas automações interativas de interfaces de documentação, geração de código, etc.

OpenAPI tem uma forma para definir múltiplos “esquemas” de segurança.

---

## **Typer**, o FastAPI das interfaces de linhas de comando

<a href="https://typer.tiangolo.com" target="_blank"><img src="https://typer.tiangolo.com/img/logo-margin/logo-margin-vector.svg" style="width: 20%;"></a>

---

## **Typer**, le FastAPI des <abbr title="Command Line Interface">CLI</abbr>

<a href="https://typer.tiangolo.com" target="_blank"><img src="https://typer.tiangolo.com/img/logo-margin/logo-margin-vector.svg" style="width: 20%;"></a>

* This also allows using automatic **client code generation** in many languages.

### Automatic docs

Interactive API documentation and exploration web user interfaces. As the framework is based on OpenAPI, there are multiple options, 2 included by default.

* Esto también permite la **generación automática de código de cliente** para muchos lenguajes.

### Documentación automática

Documentación interactiva de la API e interfaces web de exploración. Hay múltiples opciones, dos incluidas por defecto, porque el framework está basado en OpenAPI.

    * `datetime` objects.
    * `UUID` objects.
    * Database models.
    * ...and many more.
* Automatic interactive API documentation, including 2 alternative user interfaces:
    * Swagger UI.
    * ReDoc.

---

Coming back to the previous code example, **FastAPI** will:

* Validate that there is an `item_id` in the path for `GET` and `PUT` requests.