- link: /uk/
    name: uk - українська мова
  - link: /ur/
    name: ur - اردو
  - link: /vi/
    name: vi - Tiếng Việt
  - link: /yo/
    name: yo - Yorùbá
  - link: /zh/
    name: zh - 简体中文
  - link: /zh-hant/
    name: zh-hant - 繁體中文
  - link: /em/
    name: 😉
extra_css:
- css/termynal.css
- css/custom.css
extra_javascript:
- js/termynal.js
- js/custom.js
hooks:

* 🌐 Add Traditional Chinese translation for `docs/zh-hant/benchmarks.md`. PR [#11484](https://github.com/tiangolo/fastapi/pull/11484) by [@KNChiu](https://github.com/KNChiu).
* 🌐 Update Chinese translation for `docs/zh/docs/fastapi-people.md`. PR [#11476](https://github.com/tiangolo/fastapi/pull/11476) by [@billzhong](https://github.com/billzhong).

@app.get("/items/{item_id}")
async def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

**Note**:

如果你不知道是否会用到，可以查看文档的 _"In a hurry?"_ 章节中 <a href="https://fastapi.tiangolo.com/zh/async/#in-a-hurry" target="_blank">关于 `async` 和 `await` 的部分</a>。

</details>

### 运行

通过以下命令运行服务器：

<div class="termy">

```console
$ uvicorn main:app --reload