```
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

Le fichier `main.py` contiendrait :

{* ../../docs_src/async_tests/app_a_py310/main.py *}

Le fichier `test_main.py` contiendrait les tests pour `main.py`, il pourrait maintenant ressembler à ceci :

{* ../../docs_src/async_tests/app_a_py310/test_main.py *}

            : Optional.ofNullable(getJavaSourceSets(project).findByName(SourceSet.TEST_SOURCE_SET_NAME));
    }

    /**
     * @param project The project to look for main Java resources.
     * @return An Optional that contains the Java main SourceSet if it exists.
     */
    public static Optional<SourceSet> getJavaMainSourceSet(Project project) {
        return isJavaExtensionAvailable(project)
            ? Optional.empty()

        <action android:name="android.intent.action.MAIN" />

        <category android:name="android.intent.category.LAUNCHER" />
      </intent-filter>
    </activity>

    <activity
      android:name=".MainActivity2"
      android:process=":activity2"
      android:exported="true">
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />

		"${PWD}/mc" cat --vid "${vid}" minio/bucket/testobj | md5sum
	done

	pkill minio
	sleep 3
}

function main() {
	start_port=$(shuf -i 10000-65000 -n 1)

	start_minio_4drive ${start_port}
}

function purge() {
	rm -rf "$1"
}

(main "$@")
rv=$?
purge "$WORK_DIR"

    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;
    sendfile        on;
    keepalive_timeout  65;

    # include /etc/nginx/conf.d/*.conf;

		<jsp:include page="/WEB-INF/view/common/admin/sidebar.jsp">
			<jsp:param name="menuCategoryType" value="system" />
			<jsp:param name="menuType" value="sereq" />
		</jsp:include>
		<main class="content-wrapper">
			<div class="content-header">
				<div class="container-fluid">
					<div class="row mb-2">
						<div class="col-sm-6">
							<h1>
								<la:message key="labels.sereq_configuration" />

 *     <li>{@linkplain Project#getPomArtifact() the project POM artifact}</li>
 *     <li>{@linkplain Project#getMainArtifact() the main artifact}</li>
 *     <li>{@linkplain org.apache.maven.api.services.ProjectManager#attachArtifact(Session, Project, Path) artifacts to be attached to a project}</li>
 * </ul>
 *
 * <p>For the main artifact and attached artifacts, the
 * {@link org.apache.maven.api.services.ArtifactManager ArtifactManager} service must be used

RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt

# (1)!
COPY ./main.py /code/

# (2)!
CMD ["fastapi", "run", "main.py", "--port", "80"]
```

1. 直接将 `main.py` 复制到 `/code`（没有 `./app` 目录）。

2. 使用 `fastapi run` 来运行单文件 `main.py` 中的应用。

当你把文件传给 `fastapi run` 时，它会自动检测这是一个单文件而不是包，并知道如何导入并服务你的 FastAPI 应用。😎

## 部署概念 { #deployment-concepts }

<div class="termy">

```console
// Here we don't set the env var yet
$ python main.py

// As we didn't set the env var, we get the default value

Hello World from Python

// But if we create an environment variable first
$ export MY_NAME="Wade Wilson"

// And then call the program again
$ python main.py

// Now it can read the environment variable

Hello Wade Wilson from Python
```

│   ├── main.py
│   ├── __init__.py
```

那么你可以将 `entrypoint` 设置为：

```toml
[tool.fastapi]
entrypoint = "backend.main:app"
```

这等价于：

```python
from backend.main import app
```

### 带路径的 `fastapi dev` { #fastapi-dev-with-path }

你也可以把文件路径传给 `fastapi dev` 命令，它会猜测要使用的 FastAPI 应用对象：

```console
$ fastapi dev main.py
```

但每次运行 `fastapi` 命令都需要记得传入正确的路径。