Conversations in the chat systems are also not as easily searchable as in GitHub, so questions and answers might get lost in the conversation. And only the ones in GitHub count to become a [FastAPI Expert](fastapi-people.md#fastapi-experts){.internal-link target=_blank}, so you will most probably receive more attention in GitHub.

Déclarez ensuite votre modèle de données en tant que classe qui hérite de `BaseModel`.

Utilisez les types Python standard pour tous les attributs :

```Python hl_lines="7-11"
{!../../../docs_src/body/tutorial001.py!}
```

# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.

# -----------------------------------------------------------------------------
# Configuration

    {!> ../../../docs_src/websockets/tutorial003_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="81-83"
    {!> ../../../docs_src/websockets/tutorial003.py!}
    ```

To try it out:

* Open the app with several browser tabs.
* Write messages from them.
* Then close one of the tabs.

That will raise the `WebSocketDisconnect` exception, and all the other clients will receive a message like:

* A documentação interativa da API será automaticamente atualizada, incluindo o novo corpo:

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Clique no botão "Try it out", ele permitirá que você preencha os parâmetros e interaja diretamente com a API:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

* İnteraktiv API sənədləri yeni gövdə də daxil olmaq ilə avtomatik olaraq yenilənəcək:

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* "Try it out" düyməsini klikləyin, bu, parametrləri doldurmağa və API ilə birbaşa əlaqə saxlamağa imkan verir:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

* Tài liệu API sẽ được tự động cập nhật, bao gồm body mới:

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Click vào nút "Try it out", nó cho phép bạn điền những tham số và tương tác trực tiếp với API:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

* Ìbáṣepọ̀ àkọsílẹ̀ API yóò ṣe imudojuiwọn àkọsílẹ̀ API laifọwọyi, pẹ̀lú kókó èsì ìdáhùn API tuntun:

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Tẹ bọtini "Gbiyanju rẹ" i.e. "Try it out", yóò gbà ọ́ láàyè láti jẹ́ kí ó tẹ́ àlàyé tí ó nílò kí ó le sọ̀rọ̀ tààrà pẹ̀lú API:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

- 自動対話型の API ドキュメントが新しいボディも含めて自動でアップデートされます:

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

- "Try it out"ボタンをクリックしてください。パラメータを入力して API と直接やりとりすることができます:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

- それから、"Execute" ボタンをクリックしてください。 ユーザーインターフェースは API と通信し、パラメータを送信し、結果を取得して画面に表示します:

Because `Annotated` can have more than one metadata annotation, you could now even use the same function with other tools, like <a href="https://typer.tiangolo.com/" class="external-link" target="_blank">Typer</a>. 🚀