3260, 3271, 3287, 3310, 3327, 3355, 3374, 3404, 3424, 3439, 3457, 3472, 3486, 3521, 3540, 3551, 3564, 3579, 3602, 3628, 3644, 3662, 3680, 3694, 3711, 3742, 3762, 3783, 3804, 3823, 3842, 3860, 3883, 3907, 3931, 3956, 3991, 4016, 4050, 4083, 4104, 4118, 4137, 4166, 4189, 4216, 4250, 4282, 4312, 4335, 4363, 4395, 4423, 4447, 4471, 4500, 4518, 4535, 4557, 4574, 4592, 4612, 4638, 4654, 4673, 4694, 4698, 4716, 4733, 4759, 4773, 4797, 4818, 4833, 4851, 4874, 4889, 4908, 4925, 4942, 4966, 4993, 5016, 5039, 5056,...

{!../../../docs_src/async_sql_databases/tutorial001.py!}
```

这两个 Pydantic 模型都可以辅助验证、序列化（转换）并注释（存档）输入的数据。

因此，API 文档会显示这些数据。

## 连接与断开

* 创建 `FastAPI` 应用
* 创建事件处理器，执行数据库连接与断开操作

```Python hl_lines="42  45-47  50-52"
{!../../../docs_src/async_sql_databases/tutorial001.py!}
```

## 读取笔记

创建读取笔记的*路径操作函数*：

```Python hl_lines="55-58"
{!../../../docs_src/async_sql_databases/tutorial001.py!}
```

!!! Note "笔记"

### Create your **FastAPI** *path operations*

Now, finally, here's the standard **FastAPI** *path operations* code.

=== "Python 3.9+"

    ```Python hl_lines="21-26  29-32  35-40  43-47  50-53"
    {!> ../../../docs_src/sql_databases/sql_app_py39/main.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="23-28  31-34  37-42  45-49  52-55"

        new File(getBasedir(), BASE_MIXIN_DIR);
        EmptyLifecycleBindingsInjector.useEmpty();
    }

    /**
     * Will throw exception if url is empty. MNG-4050
     *
     * @throws Exception in case of issue
     */
    @Test
    void testEmptyUrl() throws Exception {
        buildPom("empty-distMng-repo-url");
    }

    /**

* 👷 Disable CI installing Material for MkDocs in forks. PR [#4410](https://github.com/tiangolo/fastapi/pull/4410) by [@dolfinus](https://github.com/dolfinus).

## 0.77.1

### Upgrades