* <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md#responsesObject" class="external-link" target="_blank">Objeto de Retorno OpenAPI</a>, inclui o `Response Object`.

///

/// info

Sie können auch:

* `response_model_exclude_defaults=True`
* `response_model_exclude_none=True`

## Больше информации

/// info

Weitere Informationen zu Starlettes `lifespan`-Handlern finden Sie in <a href="https://www.starlette.io/lifespan/" class="external-link" target="_blank">Starlettes Lifespan-Dokumentation</a>.

```

////

## Запуск

/// info | "Дополнительная информация"

Вначале, установите библиотеку <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>.

А именно: `pip install python-multipart`.

Это связано с тем, что **OAuth2** использует "данные формы" для передачи `имени пользователя` и `пароля`.

///

Запустите ваш сервер:

, ⏸:

```Python
    uvicorn.run(app, host="0.0.0.0", port=8000)
```

🔜 🚫 🛠️.

/// info

🌅 ℹ, ✅ <a href="https://docs.python.org/3/library/__main__.html" class="external-link" target="_blank">🛂 🐍 🩺</a>.

///

## 🏃 👆 📟 ⏮️ 👆 🕹

↩️ 👆 🏃 Uvicorn 💽 🔗 ⚪️➡️ 👆 📟, 👆 💪 🤙 👆 🐍 📋 (👆 FastAPI 🈸) 🔗 ⚪️➡️ 🕹.

---

🖼, 🎙 🎙 📟, 👆 💪:

* 🚶 "ℹ" 🎛.
* "🚮 📳...".
* 🖊 "🐍"

# Response - Cambiar el Status Code

Probablemente ya has leído con anterioridad que puedes establecer un [Response Status Code](../tutorial/response-status-code.md){.internal-link target=_blank} por defecto.

Pero en algunos casos necesitas retornar un status code diferente al predeterminado.

## Casos de uso

Por ejemplo, imagina que quieres retornar un HTTP status code de "OK" `200` por defecto.

* <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#responsesObject" class="external-link" target="_blank">🗄 📨 🎚</a>, ⚫️ 🔌 `Response Object`.

$carousel-control-hover-opacity;\n  }\n}\n.carousel-control-prev {\n  left: 0;\n  @if $enable-gradients {\n    background-image: linear-gradient(90deg, rgba($black, .25), rgba($black, .001));\n  }\n}\n.carousel-control-next {\n  right: 0;\n  @if $enable-gradients {\n    background-image: linear-gradient(270deg, rgba($black, .25), rgba($black, .001));\n  }\n}\n\n// Icons for within\n.carousel-control-prev-icon,\n.carousel-control-next-icon {\n  display: inline-block;\n  width: $carousel-control-icon-width;\n...

/// info

Um hochgeladene Dateien und/oder Formulardaten zu empfangen, installieren Sie zuerst <a href="https://andrew-d.github.io/python-multipart/" class="external-link" target="_blank">`python-multipart`</a>.

Z. B. `pip install python-multipart`.

///

## `File` und `Form` importieren

//// tab | Python 3.9+

```Python hl_lines="3"