```Python hl_lines="7"
{!../../docs_src/query_params_str_validations/tutorial006.py!}
```

/// info | "Informação"

Se você nunca viu os `...` antes: é um valor único especial, faz <a href="https://docs.python.org/3/library/constants.html#Ellipsis" class="external-link" target="_blank">parte do Python e é chamado "Ellipsis"</a>.

///

Dessa forma o **FastAPI** saberá que o parâmetro é obrigatório.

```Python hl_lines="1  6-9"
{!../../docs_src/path_params/tutorial005.py!}
```

/// 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

<img src="https://fastapi.tiangolo.com/img/python-types/image06.png">

## Modelos de Pydantic

<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> es una library de Python para llevar a cabo validación de datos.

Tú declaras la "forma" de los datos mediante clases con atributos.

Cada atributo tiene un tipo.

```Python hl_lines="1  6-9"
{!../../docs_src/path_params/tutorial005.py!}
```

/// 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

{* ../../docs_src/query_params_str_validations/tutorial006.py hl[7] *}

/// info

Si vous n'avez jamais vu ce `...` auparavant : c'est une des constantes natives de Python <a href="https://docs.python.org/fr/3/library/constants.html#Ellipsis" class="external-link" target="_blank">appelée "Ellipsis"</a>.

///

Cela indiquera à **FastAPI** que la présence de ce paramètre est obligatoire.

	github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0 // indirect
	github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358 // indirect
	github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2 // indirect
	github.com/VividCortex/ewma v1.2.0 // indirect
	github.com/acarl005/stripansi v0.0.0-20180116102854-5a71ef0e047d // indirect
	github.com/apache/thrift v0.20.0 // indirect

 *  New: Switch our Internationalized Domain Name (IDN) implementation to [UTS #46 Nontransitional
    Processing][uts46]. With this fix, the `ß` code point no longer maps to `ss`. OkHttp now embeds
    its own IDN mapping table in the library.

 *  New: Prefer the client's configured precedence order for TLS cipher suites. (OkHttp used to
    prefer the JDK’s precedence order.) This change may cause your HTTP calls to negotiate a

然后，创建包含固定值的类属性，这些固定值是可用的有效值：

```Python hl_lines="1  6-9"
{!../../docs_src/path_params/tutorial005.py!}
```

/// info | "说明"

Python 3.4 及之后版本支持<a href="https://docs.python.org/3/library/enum.html" class="external-link" target="_blank">枚举（即 enums）</a>。

///

/// tip | "提示"

**AlexNet**、**ResNet**、**LeNet** 是机器学习<abbr title="技术上来说是深度学习模型架构">模型</abbr>。

///

### 声明*路径参数*

///

`status_code`パラメータはHTTPステータスコードを含む数値を受け取ります。

/// info | "情報"

`status_code`は代わりに、Pythonの<a href="https://docs.python.org/3/library/http.html#http.HTTPStatus" class="external-link" target="_blank">`http.HTTPStatus`</a>のように、`IntEnum`を受け取ることもできます。

///

これは:

* レスポンスでステータスコードを返します。
* OpenAPIスキーマ（およびユーザーインターフェース）に以下のように文書化します:

           Shell2Junit License Information

Feb, 2010

shell2junit library and sample code is licensed under Apache License, v.2.0.

(c) 2009 Manolo Carrasco (Manuel Carrasco Moñino)

=====

Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/ 

1. Definitions.

"License" shall mean the terms and conditions for use, reproduction, and 
distribution as defined by Sections 1 through 9 of this document.