### Déclarer un paramètre de chemin

Créez ensuite un *paramètre de chemin* avec une annotation de type désignant l'énumération créée précédemment (`ModelName`) :

```Python hl_lines="16"
{!../../../docs_src/path_params/tutorial005.py!}
```

### Documentation

    /**
     * Fetches models of a given type for the given projects passing a parameter to the underlying builder.
     */
    <T> List<T> getModels(Project requester, List<Project> targets, String modelName, Class<T> modelType, @Nullable Object parameter);

    /**
     * Fetches models of a given type for the given projects passing a parameter to the underlying builder.
     * <p>

### 声明*路径参数*

使用 Enum 类（`ModelName`）创建使用类型注解的*路径参数*：

```Python hl_lines="16"
{!../../../docs_src/path_params/tutorial005.py!}
```

### 查看文档

 API 文档会显示预定义*路径参数*的可用值：

<img src="/img/tutorial/path-params/image03.png">

### 使用 Python _枚举类型_

*路径参数*的值是枚举的元素。

#### 比较*枚举元素*

枚举类 `ModelName` 中的*枚举元素*支持比较操作：

```Python hl_lines="17"

        loggingManager.setLevelInternal(providerLogLevel);
        loggingManager.start();
    }

    public Object run(String modelName, BuildCancellationToken cancellationToken, ProviderOperationParameters providerParameters) {
        List<String> tasks = providerParameters.getTasks();
        if (modelName.equals(ModelIdentifier.NULL_MODEL) && tasks == null) {
            throw new IllegalArgumentException("No model type or tasks specified.");

### Declare um *parâmetro de rota*

Logo, crie um *parâmetro de rota* com anotações de tipo usando a classe enum que você criou (`ModelName`):

```Python hl_lines="16"
{!../../../docs_src/path_params/tutorial005.py!}
```

### Revise a documentação

!!! tip "팁"
    혹시 궁금하다면, "AlexNet", "ResNet", 그리고 "LeNet"은 그저 기계 학습 <abbr title="기술적으로 정확히는 딥 러닝 모델 구조">모델</abbr>들의 이름입니다.

### *경로 매개변수* 선언

생성한 열거형 클래스(`ModelName`)를 사용하는 타입 어노테이션으로 *경로 매개변수*를 만듭니다:

```Python hl_lines="16"
{!../../../docs_src/path_params/tutorial005.py!}
```

### 문서 확인

*경로 매개변수*에 사용할 수 있는 값은 미리 정의되어 있으므로 대화형 문서에서 잘 표시됩니다:

     *
     * @param identityPath The project for which the model should be created, or null for a build scoped model.
     */
    fun <T> loadOrCreateIntermediateModel(identityPath: Path?, modelName: String, parameter: ToolingModelParameterCarrier?, creator: () -> T?): T?

    /**

        expect:
        def result = serialize(action, BuildActionSerializer.create())
        result instanceof BuildModelAction
        result.startParameter.taskNames == ['a', 'b']
        result.modelName == "model"
        result.runTasks
        result.clientSubscriptions.operationTypes == [OperationType.TASK] as Set
    }

    def "serializes ClientProvidedBuildAction"() {

#### *列挙型メンバ*の比較

これは、作成した列挙型 `ModelName` の*列挙型メンバ*と比較できます:

```Python hl_lines="17"
{!../../../docs_src/path_params/tutorial005.py!}
```

#### *列挙値*の取得

`model_name.value` 、もしくは一般に、 `your_enum_member.value` を使用して実際の値 (この場合は `str`) を取得できます。

```Python hl_lines="20"
{!../../../docs_src/path_params/tutorial005.py!}
```

!!! tip "豆知識"
    `ModelName.lenet.value` でも `"lenet"` 値にアクセスできます。

            sideEffect.runSideEffect()
        }
    }

    override fun <T> loadOrCreateIntermediateModel(identityPath: Path?, modelName: String, parameter: ToolingModelParameterCarrier?, creator: () -> T?): T? {
        return intermediateModels.loadOrCreateIntermediateModel(identityPath, modelName, parameter, creator)
    }