# Markdown files sometimes need trailing whitespaces.
[*.md]
trim_trailing_whitespace = false

[*.{yml,yaml}]
indent_size = 2

[gradle/verification-metadata.xml]
indent_size = 3

[subprojects/launcher/src/main/resources/release-features.txt]

   <span style="background-color:#007166"><font color="#D3D7CF"> module </font></span>  🐍 main.py

     <span style="background-color:#007166"><font color="#D3D7CF"> code </font></span>  Importing the FastAPI app object from the module with the
             following code:

```

</div>

<details markdown="1">
<summary>关于 <code>uvicorn main:app --reload</code> 命令......</summary>

 `uvicorn main:app` 命令含义如下:

* `main`：`main.py` 文件（一个 Python "模块"）。
* `app`：在 `main.py` 文件中通过 `app = FastAPI()` 创建的对象。
* `--reload`：让服务器在更新代码后重新启动。仅在开发时使用该选项。

</details>

### 检查

///

## 等待消息并发送消息

在您的 WebSocket 路由中，您可以使用 `await` 等待消息并发送消息。

{* ../../docs_src/websockets/tutorial001.py hl[48:52] *}

您可以接收和发送二进制、文本和 JSON 数据。

## 尝试一下

如果您的文件名为 `main.py`，请使用以下命令运行应用程序：

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

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

    String MAVEN_PLUGIN = "maven-plugin";

    /**
     * Artifact type name for a JAR file containing test classes. If the main artifact is placed on the class path
     * ({@value #JAR} or {@value #CLASSPATH_JAR} types), then the test artifact will also be placed on the class path.
     * Otherwise, if the main artifact is placed on the module path ({@value #JAR} or {@value #MODULAR_JAR} types),

                    "description": "Production environment",
                },
            ],
            "paths": {
                "/app": {
                    "get": {
                        "summary": "Read Main",
                        "operationId": "read_main_app_get",
                        "responses": {
                            "200": {
                                "description": "Successful Response",

    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/app": {
                "get": {
                    "summary": "Read Main",
                    "operationId": "read_main_app_get",
                    "responses": {
                        "200": {
                            "description": "Successful Response",

        if (!response.isSuccessful) throw IOException("Unexpected code $response")

        println(response.request.url)
      }
    } finally {
      server.shutdown()
    }
  }
}

fun main() {
  DevServer().run()

  @JsonClass(generateAdapter = true)
  data class Gist(
    var files: Map<String, GistFile>?,
  )

  @JsonClass(generateAdapter = true)
  data class GistFile(
    var content: String?,
  )
}

fun main() {
  ParseResponseWithMoshi().run()

      if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);

      System.out.println(response.body().string());
    }
  }

  public static void main(String... args) throws Exception {
    new PostFile().run();
  }