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"

    "testProject" : "largeAndroidBuild",
    "linux" : 824
  }, {
    "testProject" : "nowInAndroidBuild",
    "linux" : 831
  }, {
    "testProject" : "santaTrackerAndroidBuild",
    "linux" : 450
  } ]
}, {
  "scenario" : "org.gradle.performance.regression.buildcache.TaskOutputCachingJavaPerformanceTest.clean assemble for abi change with local cache",
  "durations" : [ {
    "testProject" : "largeJavaMultiProject",

			Optional:    true,
			Type:        "sentence",
		},
	}

	HelpNSQ = config.HelpKVS{
		config.HelpKV{
			Key:         target.NSQAddress,
			Description: "NSQ server address e.g. '127.0.0.1:4150'",
			Type:        "address",
			Sensitive:   true,
		},
		config.HelpKV{
			Key:         target.NSQTopic,
			Description: "NSQ topic",
			Type:        "string",
		},
		config.HelpKV{

    X434,
    X435,
    X436,
    X437,
    X438,
    X439,
    X440,
    X441,
    X442,
    X443,
    X444,
    X445,
    X446,
    X447,
    X448,
    X449,
    X450,
    X451,
    X452,
    X453,
    X454,
    X455,
    X456,
    X457,
    X458,
    X459,
    X460,
    X461,
    X462,
    X463,
    X464,
    X465,
    X466,

    X434,
    X435,
    X436,
    X437,
    X438,
    X439,
    X440,
    X441,
    X442,
    X443,
    X444,
    X445,
    X446,
    X447,
    X448,
    X449,
    X450,
    X451,
    X452,
    X453,
    X454,
    X455,
    X456,
    X457,
    X458,
    X459,
    X460,
    X461,
    X462,
    X463,
    X464,
    X465,
    X466,

          +
          // The possible number of two byte characters
          TWO_BYTE_ROUNDTRIPPABLE_CHARACTERS;

  // 2048
  private static final long THREE_BYTE_SURROGATES = 2 * 1024;

  // 61,440 [chars 0x0800 to 0xFFFF, minus surrogates]
  private static final long THREE_BYTE_ROUNDTRIPPABLE_CHARACTERS =
      0xFFFF - 0x0800 + 1 - THREE_BYTE_SURROGATES;

  // 2,650,112

    title: Authorization on FastAPI with Casbin
  - author: New Relic
    author_link: https://newrelic.com
    link: https://newrelic.com/instant-observability/fastapi/e559ec64-f765-4470-a15f-1901fcebb468
    title: How to monitor FastAPI application performance using Python agent
  - author: Jean-Baptiste Rocher
    author_link: https://hashnode.com/@jibrocher

### 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"

### 创建您的**FastAPI** *路径操作*

现在，到了最后，编写标准的**FastAPI** *路径操作*代码。

=== "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"