## Daha Fazla Bilgi { #more-info }

## Pydantic `Settings` { #pydantic-settings }

Fortunately, Pydantic provides a great utility to handle these settings coming from environment variables with [Pydantic: Settings management](https://docs.pydantic.dev/latest/concepts/pydantic_settings/).

### Install `pydantic-settings` { #install-pydantic-settings }

Ve `Response`, header ve cookie set etmek için sık kullanıldığından, **FastAPI** bunu `fastapi.Response` olarak da sağlar.

///

Para rodar qualquer um dos exemplos, copie o código para um arquivo `main.py`, e inicie o `fastapi dev`:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev

  <span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting development server 🚀

<div class="termy">

```console
$ fastapi deploy

Deploying to FastAPI Cloud...

✅ Deployment successful!

🐔 Ready the chicken! Your app is ready at https://myapp.fastapicloud.dev
```

</div>

That's it! Now you can access your app at that URL. ✨

## About FastAPI Cloud { #about-fastapi-cloud }

показывать клиенту в браузере, вам нужно добавить их в настройки CORS (подробнее см. в [CORS (Cross-Origin Resource Sharing)](../tutorial/cors.md)), используя параметр `expose_headers`, описанный в [документации Starlette по CORS](https://www.starlette.dev/middleware/#corsmiddleware)....

## Pydantic `Settings` { #pydantic-settings }

Afortunadamente, Pydantic proporciona una gran utilidad para manejar estas configuraciones provenientes de variables de entorno con [Pydantic: Settings management](https://docs.pydantic.dev/latest/concepts/pydantic_settings/).

### Instalar `pydantic-settings` { #install-pydantic-settings }

```

Isso gerará um SDK TypeScript em `./src/client`.

Você pode aprender como [instalar `@hey-api/openapi-ts`](https://heyapi.dev/openapi-ts/get-started) e ler sobre o [resultado gerado](https://heyapi.dev/openapi-ts/output) no site deles.

### Usando o SDK { #using-the-sdk }

但 FastAPI 也同樣支援以相同方式使用 [`dataclasses`](https://docs.python.org/3/library/dataclasses.html)：

{* ../../docs_src/dataclasses_/tutorial001_py310.py hl[1,6:11,18:19] *}

這之所以可行，要感謝 **Pydantic**，因為它 [內建支援 `dataclasses`](https://docs.pydantic.dev/latest/concepts/dataclasses/#use-of-stdlib-dataclasses-with-basemodel)。

所以，即使上面的程式碼沒有明確使用 Pydantic，FastAPI 仍會使用 Pydantic 將那些標準的 dataclass 轉換為 Pydantic 版本的 dataclass。

而且當然一樣支援：

- 資料驗證
- 資料序列化
- 資料文件化等

görebilmesini istediğiniz özel header'larınız varsa, bunları CORS ayarlarınıza eklemeniz gerekir ([CORS (Cross-Origin Resource Sharing)](../tutorial/cors.md) bölümünde daha fazla bilgi), bunun için [Starlette'in CORS dokümanında](https://www.starlette.dev/middleware/#corsmiddleware) açıklanan `expose_headers` parametresini kullanın....