Оскільки редактор знає типи змінних, ви не тільки отримаєте автозаповнення, ви також отримаєте перевірку помилок:

<img src="/img/python-types/image04.png">

Тепер ви знаєте, щоб виправити це, вам потрібно перетворити `age` у строку з допомогою `str(age)`:

{* ../../docs_src/python_types/tutorial004.py hl[2] *}


## Оголошення типів

Щойно ви побачили основне місце для оголошення анотацій типу. Як параметри функції.

下面是一个已经有类型提示的函数：

{* ../../docs_src/python_types/tutorial003.py hl[1] *}


因为编辑器已经知道了这些变量的类型，所以不仅能对代码进行补全，还能检查其中的错误：

<img src="https://fastapi.tiangolo.com/img/python-types/image04.png">

现在你知道了必须先修复这个问题，通过 `str(age)` 把 `age` 转换成字符串：

{* ../../docs_src/python_types/tutorial004.py hl[2] *}


## 声明类型

你刚刚看到的就是声明类型提示的主要场景。用于函数的参数。

这也是你将在 **FastAPI** 中使用它们的主要场景。

### 简单类型

     */
    @Override
    protected OptionalThing<LoginManager> myLoginManager() {
        return OptionalThing.empty();
    }

    /**
     * Sets up HTML data for rendering search-related pages. This includes
     * label types, language items, user information, and various UI flags.
     *
     * @param runtime the action runtime context
     */
    @Override

     *
     * @return this ExecJob instance for method chaining
     */
    public ExecJob gcLogging() {
        final StringBuilder buf = new StringBuilder(100);
        buf.append("-Xlog:gc*,gc+age=trace,safepoint:file=");
        if (logFilePath != null) {
            buf.append(logFilePath);
        } else {
            buf.append(ComponentUtil.getSystemHelper().getLogFilePath());
        }

{* ../../docs_src/python_types/tutorial003.py hl[1] *}


편집기가 변수의 타입을 알고 있기 때문에, 자동완성 뿐 아니라 에러도 확인할 수 있습니다:

<img src="/img/python-types/image04.png">

이제 고쳐야하는 걸 알기 때문에, `age`를 `str(age)`과 같이 문자열로 바꾸게 됩니다:

{* ../../docs_src/python_types/tutorial004.py hl[2] *}


## 타입 선언

방금 함수의 매개변수로써 타입 힌트를 선언하는 주요 장소를 보았습니다.

이 위치는 여러분이 **FastAPI**와 함께 이를 사용하는 주요 장소입니다.

   *
   * @param lists the lists to choose elements from, in the order that the elements chosen from
   *     those lists should appear in the resulting lists
   * @param <B> any common base class shared by all axes (often just {@link Object})
   * @return the Cartesian product, as an immutable list containing immutable lists
   * @throws IllegalArgumentException if the size of the cartesian product would be greater than

    @Test
    @DisplayName("Test automatic cleanup of old resources")
    @Timeout(value = 5, unit = TimeUnit.SECONDS)
    void testAutomaticCleanup() throws InterruptedException {
        // Configure with very short max age for testing
        resourceManager.configure(100, 50, true, true);

        TestResource resource = new TestResource("old");
        resourceManager.registerResource(resource);

import org.codelibs.fess.app.web.base.FessAdminAction;
import org.codelibs.fess.mylasta.action.FessUserBean;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.HtmlResponse;

/**
 * The action for admin pages.
 */
public class AdminAction extends FessAdminAction {

    /**
     * Default constructor.
     */
    public AdminAction() {
        super();
    }

    @Override

  private fun trailersAndCache(protocol: Protocol) {
    enableProtocol(protocol)

    server.enqueue(
      MockResponse
        .Builder()
        .addHeader("h1", "v1")
        .addHeader("Cache-Control: max-age=30")
        .body(protocol, "Hello")
        .trailers(headersOf("t1", "v2"))
        .build(),
    )

    val call1 = client.newCall(Request(server.url("/")))
    call1.execute().use { response ->

    /** Current page number for pagination */
    public String currentPageNumber;

    /** Total number of records found */
    public String allRecordCount;

    /** Total number of pages for pagination */
    public String allPageCount;

    /** Flag indicating if there is a next page */
    public boolean existNextPage;

    /** Flag indicating if there is a previous page */