{* ../../docs_src/path_params_numeric_validations/tutorial003_py39.py hl[7] *}

### Better with `Annotated` { #better-with-annotated }

E um retorno com o código de status `200` que utiliza o seu `response_model`, porém inclui um `example` customizado:

{* ../../docs_src/additional_responses/tutorial003_py39.py hl[20:31] *}

Isso será combinado e incluído em seu OpenAPI, e disponibilizado na documentação da sua API:

<img src="/img/tutorial/additional-responses/image01.png">

{* ../../docs_src/python_types/tutorial003_py39.py hl[1] *}

Because the editor knows the types of the variables, you don't only get completion, you also get error checks:

<img src="/img/python-types/image04.png">

Now you know that you have to fix it, convert `age` to a string with `str(age)`:

{* ../../docs_src/python_types/tutorial004_py39.py hl[2] *}

## Declaring types { #declaring-types }

А также ответ со статус-кодом `200`, который использует ваш `response_model`, но включает пользовательский `example`:

{* ../../docs_src/additional_responses/tutorial003_py39.py hl[20:31] *}

Всё это будет объединено и включено в ваш OpenAPI и отображено в документации API:

<img src="/img/tutorial/additional-responses/image01.png">

You can then pass that custom function to **FastAPI** as the `generate_unique_id_function` parameter:

{* ../../docs_src/generate_clients/tutorial003_py39.py hl[6:7,10] *}

### Generate a TypeScript Client with Custom Operation IDs { #generate-a-typescript-client-with-custom-operation-ids }

{* ../../docs_src/path_params_numeric_validations/tutorial003_py39.py hl[7] *}

### Melhor com `Annotated` { #better-with-annotated }

{* ../../docs_src/python_types/tutorial003_py39.py hl[1] *}

Como o editor conhece os tipos de variáveis, você não obtém apenas o preenchimento automático, mas também as verificações de erro:

<img src="/img/python-types/image04.png">

Agora você sabe que precisa corrigí-lo, converta `age` em uma string com `str(age)`:

{* ../../docs_src/python_types/tutorial004_py39.py hl[2] *}

{* ../../docs_src/python_types/tutorial003_py39.py hl[1] *}

Porque el editor conoce los tipos de las variables, no solo obtienes autocompletado, también obtienes chequeo de errores:

<img src="/img/python-types/image04.png">

Ahora sabes que debes corregirlo, convertir `age` a un string con `str(age)`:

{* ../../docs_src/python_types/tutorial004_py39.py hl[2] *}

## Declaración de tipos { #declaring-types }

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

## 处理断开连接和多个客户端

当 WebSocket 连接关闭时，`await websocket.receive_text()` 将引发 `WebSocketDisconnect` 异常，您可以捕获并处理该异常，就像本示例中的示例一样。

{* ../../docs_src/websockets/tutorial003_py39.py hl[79:81] *}

尝试以下操作：

* 使用多个浏览器选项卡打开应用程序。
* 从这些选项卡中发送消息。
* 然后关闭其中一个选项卡。

这将引发 `WebSocketDisconnect` 异常，并且所有其他客户端都会收到类似以下的消息：

```
Client #1596980209979 left the chat
```

Затем вы можете передать эту пользовательскую функцию в **FastAPI** через параметр `generate_unique_id_function`:

{* ../../docs_src/generate_clients/tutorial003_py39.py hl[6:7,10] *}

### Генерация TypeScript‑клиента с пользовательскими ID операций { #generate-a-typescript-client-with-custom-operation-ids }