## 一个文件结构示例

假设你的文件结构如下：

```
.
├── app
│   ├── __init__.py
│   ├── main.py
│   ├── dependencies.py
│   └── routers
│   │   ├── __init__.py
│   │   ├── items.py
│   │   └── users.py
│   └── internal
│       ├── __init__.py
│       └── admin.py
```

!!! tip
    上面有几个 `__init__.py` 文件：每个目录或子目录中都有一个。

    这就是能将代码从一个文件导入到另一个文件的原因。

    例如，在 `app/main.py` 中，你可以有如下一行：

package configurations

import model.CIBuildModel
import model.Stage

class SanityCheck(model: CIBuildModel, stage: Stage) : BaseGradleBuildType(stage = stage, init = {
    id(buildTypeId(model))
    name = "Sanity Check"
    description = "Static code analysis, checkstyle, release notes verification, etc."

    features {
        publishBuildStatusToGithub(model)
    }

    applyDefaults(
        model,
        this,

public final class okhttp3/JavaNetAuthenticator : okhttp3/Authenticator {
	public fun <init> ()V
	public fun authenticate (Lokhttp3/Route;Lokhttp3/Response;)Lokhttp3/Request;
}

public final class okhttp3/JavaNetCookieJar : okhttp3/CookieJar {
	public fun <init> (Ljava/net/CookieHandler;)V
	public fun loadForRequest (Lokhttp3/HttpUrl;)Ljava/util/List;
	public fun saveFromResponse (Lokhttp3/HttpUrl;Ljava/util/List;)V

import model.CIBuildModel
import model.TestCoverage
import projects.FunctionalTestProject

class FunctionalTestsPass(model: CIBuildModel, functionalTestProject: FunctionalTestProject) : BaseGradleBuildType(init = {
    id("${functionalTestProject.testCoverage.asId(model)}_Trigger")
    name = functionalTestProject.name + " (Trigger)"
    type = Type.COMPOSITE

    applyDefaultSettings()

    features {

import jetbrains.buildServer.configs.kotlin.triggers.vcs
import model.CIBuildModel
import model.StageName

class GitHubMergeQueueCheckPass(model: CIBuildModel) : BaseGradleBuildType(init = {
    id("${model.projectId}_GitHubMergeQueueCheckPass")
    uuid = "${DslContext.uuidPrefix}_${model.projectId}_GitHubMergeQueueCheckPass"
    name = "GitHub Merge Queue Check Pass"
    type = Type.COMPOSITE

    vcs {

=== ":material-language-kotlin: Kotlin"
    ```kotlin
      private val client: OkHttpClient

      init {
        val trustManager = trustManagerForCertificates(trustedCertificatesInputStream())
        val sslContext = SSLContext.getInstance("TLS")
        sslContext.init(null, arrayOf<TrustManager>(trustManager), null)
        val sslSocketFactory = sslContext.socketFactory

	public abstract fun newEventSource (Lokhttp3/Request;Lokhttp3/sse/EventSourceListener;)Lokhttp3/sse/EventSource;
}

public abstract class okhttp3/sse/EventSourceListener {
	public fun <init> ()V
	public fun onClosed (Lokhttp3/sse/EventSource;)V
	public fun onEvent (Lokhttp3/sse/EventSource;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V

class BasicTrustRootIndex(vararg caCerts: X509Certificate) : TrustRootIndex {
  private val subjectToCaCerts: Map<X500Principal, Set<X509Certificate>>

  init {
    val map = mutableMapOf<X500Principal, MutableSet<X509Certificate>>()
    for (caCert in caCerts) {
      map.getOrPut(caCert.subjectX500Principal) { mutableSetOf() }.add(caCert)
    }
    this.subjectToCaCerts = map

public final class okhttp3/android/AndroidAsyncDns : okhttp3/AsyncDns {
	public static final field Companion Lokhttp3/android/AndroidAsyncDns$Companion;
	public fun <init> (Lokhttp3/AsyncDns$DnsClass;Landroid/net/Network;)V
	public synthetic fun <init> (Lokhttp3/AsyncDns$DnsClass;Landroid/net/Network;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
	public fun query (Ljava/lang/String;Lokhttp3/AsyncDns$Callback;)V
}

## 📁 📊

👥 ✍ 🆕 📁 `sql_app/tests/test_sql_app.py`.

🆕 📁 📊 👀 💖:

``` hl_lines="9-11"
.
└── sql_app
    ├── __init__.py
    ├── crud.py
    ├── database.py
    ├── main.py
    ├── models.py
    ├── schemas.py
    └── tests
        ├── __init__.py
        └── test_sql_app.py
```

## ✍ 🆕 💽 🎉

🥇, 👥 ✍ 🆕 💽 🎉 ⏮️ 🆕 💽.

💯 👥 🔜 ⚙️ 📁 `test.db` ↩️ `sql_app.db`.