## 🤙 `uvicorn`

👆 FastAPI 🈸, 🗄 & 🏃 `uvicorn` 🔗:

```Python hl_lines="1  15"
{!../../../docs_src/debugging/tutorial001.py!}
```

### 🔃 `__name__ == "__main__"`

👑 🎯 `__name__ == "__main__"` ✔️ 📟 👈 🛠️ 🕐❔ 👆 📁 🤙 ⏮️:

<div class="termy">

```console
$ python myapp.py
```

</div>

✋️ 🚫 🤙 🕐❔ ➕1️⃣ 📁 🗄 ⚫️, 💖:

```Python
from myapp import app
```

因此，为了能够在同一个文件中使用它们，我们直接导入子模块：

```Python hl_lines="5" title="app/main.py"
{!../../../docs_src/bigger_applications/app/main.py!}
```

### 包含 `users` 和 `items` 的 `APIRouter`

现在，让我们来包含来自 `users` 和 `items` 子模块的 `router`。

```Python hl_lines="10-11" title="app/main.py"
{!../../../docs_src/bigger_applications/app/main.py!}
```

!!! info

/target/
/work/
/bin/
/mydbflute/
/solr/data/
/src/main/webapp/WEB-INF/classes/
/src/main/webapp/WEB-INF/lib/
/src/main/webapp/WEB-INF/site/
/src/main/webapp/WEB-INF/plugin/
/src/main/webapp/WEB-INF/env/crawler/lib/
/src/main/webapp/WEB-INF/env/suggest/lib/
/src/main/webapp/WEB-INF/env/thumbnail/lib/
/src/main/webapp/WEB-INF/thumbnails/
/src/main/webapp/jar/
/dbflute_fess/extlib/*
/dbflute_fess/log/*.log
/dbflute_h2/log/*.log

    unixScriptTemplate.from(layout.projectDirectory.file("../../../platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt"))
    windowsScriptTemplate.from(layout.projectDirectory.file("../../../platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/windowsStartScript.txt"))
}

configurations {
    create("gradleScriptsElements") {

<span style="color: green;">INFO</span>:     Application startup complete.
```

</div>

!!! note
    `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。


在输出中，会有一行信息像下面这样：

```hl_lines="4"

``` hl_lines="5"
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

Так как оба файла находятся в одной директории, для импорта объекта приложения из файла `main` в файл `test_main` Вы можете использовать относительный импорт:

```Python hl_lines="3"
{!../../../docs_src/app_testing/test_main.py!}
```

...и писать дальше тесты, как и раньше.

<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
```

plugins {
    id("gradlebuild.module-identity")
    java
}

val main = sourceSets.main.get()
val parameterNamesIndex by tasks.registering(ParameterNamesIndex::class) {
    sources.from(
        main.allJava.matching {
            include(PublicApi.includes)
            exclude(PublicApi.excludes)
        }
    )
    classpath.from(main.compileClasspath)
    classpath.from(tasks.named<JavaCompile>("compileJava"))

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

The file `main.py` would have:

```Python
{!../../../docs_src/async_tests/main.py!}
```

The file `test_main.py` would have the tests for `main.py`, it could look like this now:

```Python
{!../../../docs_src/async_tests/test_main.py!}
```

## Run it

You can run your tests as usual via:

import org.junit.platform.launcher.core.LauncherFactory
import org.junit.platform.launcher.listeners.SummaryGeneratingListener

/**
 * Graal main method to run tests with minimal reflection and automatic settings.
 * Uses the test list in native-image-tests/src/main/resources/testlist.txt.
 */
fun main(vararg args: String) {
  System.setProperty("junit.jupiter.extensions.autodetection.enabled", "true")