以如下方式调用：

```Python
print(user_dict)
```

输出的就是 Python `dict`：

```Python
{
    'username': 'john',
    'password': 'secret',
    'email': '******@****.***',
    'full_name': None,
}
```

#### 解包 `dict` { #unpacking-a-dict }

把 `dict`（如 `user_dict`）以 `**user_dict` 形式传递给函数（或类），Python 会执行“解包”。它会把 `user_dict` 的键和值作为关键字参数直接传递。

因此，接着上面的 `user_dict` 继续编写如下代码：

```Python

 * @author shot
 * @author manhole
 */
public class EnumerationIteratorTest {

    /**
     * @see org.junit.rules.ExpectedException
     */
    @Rule
    public ExpectedException exception = ExpectedException.none();

    /**
     *
     */
    @Test
    public void testEnumerationIterator() {
        final Vector<String> vector = new Vector<String>();
        vector.add("a");

def test_get(client: TestClient):
    response = client.get("/items/baz")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "name": "Baz",
        "description": None,
        "price": 50.2,
        "tax": 10.5,
        "tags": [],
    }


def test_patch_all(client: TestClient):
    response = client.patch(
        "/items/foo",
        json={

       * elements from each bin must either stay at same index, or move with a power of two offset.
       * We eliminate unnecessary node creation by catching cases where old nodes can be reused
       * because their next fields won't change. Statistically, at the default threshold, only
       * about one-sixth of them need cloning when a table doubles. The nodes they replace will be

  $body.stop()\n    if ($type === 'true') {\n      $body.slideUp(time, () => {\n        $element.next(SELECTOR_EXPANDABLE_BODY).addClass('d-none')\n      })\n      $element.attr(SELECTOR_ARIA_ATTR, 'false')\n      $element.trigger($.Event(EVENT_COLLAPSED))\n    } else if ($type === 'false') {\n      $element.next(SELECTOR_EXPANDABLE_BODY).removeClass('d-none')\n      $body.slideDown(time)\n      $element.attr(SELECTOR_ARIA_ATTR, 'true')\n      $element.trigger($.Event(EVENT_EXPANDED))\n    }\n  }\n\n...

public abstract interface class okhttp3/Authenticator {
	public static final field Companion Lokhttp3/Authenticator$Companion;
	public static final field JAVA_NET_AUTHENTICATOR Lokhttp3/Authenticator;
	public static final field NONE Lokhttp3/Authenticator;
	public abstract fun authenticate (Lokhttp3/Route;Lokhttp3/Response;)Lokhttp3/Request;
}

public final class okhttp3/Authenticator$Companion {
}

/**
 * @author higa
 *
 */
public class LoggerTest {

    /**
     * @see org.junit.rules.ExpectedException
     */
    @Rule
    public ExpectedException exception = ExpectedException.none();

    private final Logger logger = Logger.getLogger(getClass());

    /**
     * @throws Exception
     */
    @Test
    public void testGetLogger() throws Exception {

        ): Long {
          sink.writeUtf8("a".repeat(byteCount.toInt()))
          return byteCount
        }

        override fun close() {
        }

        override fun timeout() = Timeout.NONE
      }

    assertThat(unlimitedSource.buffer().isProbablyUtf8(1L)).isTrue()
    assertThat(unlimitedSource.buffer().isProbablyUtf8(1024L)).isTrue()

    abstract DirectoryProperty getStylesheetDirectory();

    @PathSensitive(PathSensitivity.RELATIVE)
    @InputFiles
    abstract ConfigurableFileCollection getDocbookStylesheets()

    @PathSensitive(PathSensitivity.NONE)
    @InputFile
    abstract RegularFileProperty getStylesheetHighlightFile();

    @Classpath
    abstract ConfigurableFileCollection getClasspath();

    @OutputDirectory

/**
 * @author shot
 */
public class MimeTypeUtilTest {

    /**
     * @see org.junit.rules.ExpectedException
     */
    @Rule
    public ExpectedException exception = ExpectedException.none();

    /**
     * @throws Exception
     */
    @Test
    public void testGetFromStream() throws Exception {
        final String path = ClassUtil.getPackageName(this.getClass()).replaceAll("\\.", "/") + "/aaa.html";