## 更多信息

更多关于 <abbr title="Cross-Origin Resource Sharing">CORS</abbr> 的信息，请查看 <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS" class="external-link" target="_blank">Mozilla CORS 文档</a>。

/// note | 技术细节

你也可以使用 `from starlette.middleware.cors import CORSMiddleware`。

出于方便，**FastAPI** 在 `fastapi.middleware` 中为开发者提供了几个中间件。但是大多数可用的中间件都是直接来自 Starlette。

		pType = tagPred
		predCount++
	}
	if f.ObjectSizeGreaterThan != 0 {
		pType = sizeGtPred
		predCount++
	}
	if f.ObjectSizeLessThan != 0 {
		pType = sizeLtPred
		predCount++
	}
	// Note: S3 supports empty <Filter></Filter>, so predCount == 0 is
	// valid.
	if predCount > 1 {
		return errInvalidFilter
	}

	var err error
	switch pType {
	case nonePred:

bucket exists already # purge: false # # set versioning for # # bucket [true|false] # versioning: false # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false # - name: bucket2 # policy: none # purge: false # versioning: true # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false ## Additional Annotations for the Kubernetes Job makeBucketJob makeBucketJob:...

///

## モデルの属性の宣言

以下のように`Field`をモデルの属性として使用することができます:

{* ../../docs_src/body_fields/tutorial001.py hl[11,12,13,14] *}

`Field`は`Query`や`Path`、`Body`と同じように動作し、全く同様のパラメータなどを持ちます。

/// note | 技術詳細

実際には次に見る`Query`や`Path`などは、共通の`Param`クラスのサブクラスのオブジェクトを作成しますが、それ自体はPydanticの`FieldInfo`クラスのサブクラスです。

また、Pydanticの`Field`は`FieldInfo`のインスタンスも返します。

7. Aqui o `response_model` está usando uma anotação de tipo de uma lista de dataclasses `Author`.

    Novamente, você pode combinar `dataclasses` com anotações de tipo padrão.

8. Note que esta *função de operação de rota* usa `def` regular em vez de `async def`.

    Como sempre, no FastAPI você pode combinar `def` e `async def` conforme necessário.

## Middlewares integrados { #integrated-middlewares }

**FastAPI** incluye varios middlewares para casos de uso común, veremos a continuación cómo usarlos.

/// note | Detalles Técnicos

Para los próximos ejemplos, también podrías usar `from starlette.middleware.something import SomethingMiddleware`.

It was one of the first examples of **automatic API documentation**, and this was specifically one of the first ideas that inspired "the search for" **FastAPI**.

/// note

Django REST Framework was created by Tom Christie. The same creator of Starlette and Uvicorn, on which **FastAPI** is based.

///

/// check | Inspired **FastAPI** to

/// note

If you use a response class with no media type, FastAPI will expect your response to have no content, so it will not document the response format in its generated OpenAPI docs.

///

/// note | Hinweis

Wenn Sie eine Response-Klasse ohne Medientyp verwenden, erwartet FastAPI, dass Ihre Response keinen Inhalt hat, und dokumentiert daher das Format der Response nicht in deren generierter OpenAPI-Dokumentation.

///

### Passo 1: importe `FastAPI` { #step-1-import-fastapi }

{* ../../docs_src/first_steps/tutorial001_py39.py hl[1] *}

`FastAPI` é uma classe Python que fornece todas as funcionalidades para sua API.

/// note | Detalhes Técnicos

`FastAPI` é uma classe que herda diretamente de `Starlette`.