```

/// info

<a href="https://docs.python.org/3/library/enum.html" class="external-link" target="_blank">Enumerations (or enums) are available in Python</a> since version 3.4.

///

/// tip

If you are wondering, "AlexNet", "ResNet", and "LeNet" are just names of Machine Learning <abbr title="Technically, Deep Learning model architectures">models</abbr>.

///

### Declare a *path parameter*

/// info | Información

Las <a href="https://docs.python.org/3/library/enum.html" class="external-link" target="_blank">Enumerations (o enums) están disponibles en Python</a> desde la versión 3.4.

///

/// tip | Consejo

Si lo estás dudando, "AlexNet", "ResNet", y "LeNet" son solo nombres de <abbr title="Técnicamente, arquitecturas de modelos de Deep Learning">modelos</abbr> de Machine Learning.

///

```

////

//// tab | Python 3.8+

```Python hl_lines="16"
{!> ../../docs_src/dependencies/tutorial012_an.py!}
```

////

//// tab | Python 3.8 non-Annotated

/// tip

Prefer to use the `Annotated` version if possible.

///

```Python hl_lines="15"
{!> ../../docs_src/dependencies/tutorial012.py!}
```

////

```

/// info | "情報"

パラメータ `response_class` は、レスポンスの「メディアタイプ」を定義するために利用することもできます。

この場合、HTTPヘッダー `Content-Type` には `application/json` がセットされます。

そして、OpenAPIにはそのようにドキュメントされます。

///

/// tip | "豆知識"

`ORJSONResponse` は、現在はFastAPIのみで利用可能で、Starletteでは利用できません。

///

## HTMLレスポンス

**FastAPI** からHTMLを直接返す場合は、`HTMLResponse` を使います。

* `HTMLResponse` をインポートする。

Heutzutage ist es nicht sehr populär und wird kaum verwendet.

OAuth2 spezifiziert nicht, wie die Kommunikation verschlüsselt werden soll, sondern erwartet, dass Ihre Anwendung mit HTTPS bereitgestellt wird.

/// tip | "Tipp"

Im Abschnitt über **Deployment** erfahren Sie, wie Sie HTTPS mithilfe von Traefik und Let's Encrypt kostenlos einrichten.

///

## OpenID Connect

It is not very popular or used nowadays.

OAuth2 doesn't specify how to encrypt the communication, it expects you to have your application served with HTTPS.

/// tip

In the section about **deployment** you will see how to set up HTTPS for free, using Traefik and Let's Encrypt.

///

## OpenID Connect

OpenID Connect is another specification, based on **OAuth2**.

In this case, the HTTP header `Content-Type` will be set to `application/json`.

And it will be documented as such in OpenAPI.

///

/// tip

The `ORJSONResponse` is only available in FastAPI, not in Starlette.

///

## HTML Response

To return a response with HTML directly from **FastAPI**, use `HTMLResponse`.

* Import `HTMLResponse`.

Lá você pode definir:

* O "Item ID", usado na rota.
* O "Token" usado como um parâmetro de consulta.

/// tip | Dica

Perceba que a consulta `token` será manipulada por uma dependência.

///

Com isso você pode conectar o WebSocket e então enviar e receber mensagens:

<img src="/img/tutorial/websockets/image05.png">

🕐❔ 🛠️ FastAPI 🈸 ⚠ 🎯 🏗 **💾 📦 🖼**. ⚫️ 🛎 🔨 ⚙️ <a href="https://www.docker.com/" class="external-link" target="_blank">**☁**</a>. 👆 💪 ⤴️ 🛠️ 👈 📦 🖼 1️⃣ 👩‍❤‍👨 💪 🌌.

⚙️ 💾 📦 ✔️ 📚 📈 ✅ **💂‍♂**, **🔬**, **🦁**, &amp; 🎏.

/// tip

🏃 &amp; ⏪ 💭 👉 💩 ❓ 🦘 [`Dockerfile` 🔛 👶](#fastapi).

///

<details>
<summary>📁 🎮 👶</summary>

```Dockerfile
FROM python:3.9

WORKDIR /code

```

////

//// tab | Python 3.10+ nicht annotiert

/// tip | "Tipp"

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

///

```Python hl_lines="11  13  20  23"
{!> ../../docs_src/background_tasks/tutorial002_py310.py!}
```

////

//// tab | Python 3.8+ nicht annotiert

/// tip | "Tipp"

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

///