Это полезно для отправки заранее отформатированного текста, строк логов или специальных значений <dfn title="Значение, используемое для обозначения особого условия или состояния">«сентинель»</dfn>, например `[DONE]`.

{* ../../docs_src/server_sent_events/tutorial003_py310.py hl[17] *}

/// note | Примечание

`data` и `raw_data` взаимно исключают друг друга. В каждом `ServerSentEvent` можно задать только одно из них.

///

func (opts Config) Clone() (int, time.Duration, string) {
	configMutex.RLock()
	defer configMutex.RUnlock()
	return opts.IOCount, opts.Sleep, opts.Bitrot
}

// GetWorkers returns the number of workers, -1 is none configured
func (opts Config) GetWorkers() int {
	configMutex.RLock()
	defer configMutex.RUnlock()
	return opts.DriveWorkers
}

// Update updates opts with nopts
func (opts *Config) Update(nopts Config) {

그리고 다음과 같이 호출하면:

```Python
print(user_dict)
```

Python의 `dict`가 다음과 같이 출력됩니다:

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

#### `dict` 언패킹 { #unpacking-a-dict }

`user_dict`와 같은 `dict`를 함수(또는 클래스)에 `**user_dict`로 전달하면, Python은 이를 "언팩(unpack)"합니다. 이 과정에서 `user_dict`의 키와 값을 각각 키-값 인자로 직접 전달합니다.

如果你所在的国家/地区屏蔽了某些 URL，这会很有用。

### 关闭自动文档 { #disable-the-automatic-docs }

第一步是关闭自动文档，因为默认它们会使用默认的 CDN。

要关闭它们，在创建 `FastAPI` 应用时将其 URL 设为 `None`：

{* ../../docs_src/custom_docs_ui/tutorial001_py310.py hl[8] *}

### 包含自定义文档 { #include-the-custom-docs }

现在你可以为自定义文档创建*路径操作*。

你可以复用 FastAPI 的内部函数来创建文档的 HTML 页面，并传入所需参数：

		// Baremetal setups set DNS refresh window up to dnsTTL duration.
		t := time.NewTicker(dnsTTL)
		defer t.Stop()
		for {
			select {
			case <-t.C:
				globalDNSCache.Refresh()

			case <-GlobalContext.Done():
				return
			}
		}
	}()
}

type envKV struct {
	Key   string
	Value string
	Skip  bool
}

func (e envKV) String() string {
	if e.Skip {
		return ""
	}

@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public final class InterruptibleTaskTest extends TestCase {

  // Regression test for a deadlock where a task could be stuck busy waiting for the task to
  // transition to DONE
  public void testInterruptThrows() throws Exception {
    CountDownLatch isInterruptibleRegistered = new CountDownLatch(1);
    SettableFuture<String> taskResult = SettableFuture.create();
    InterruptibleTask<String> task =

@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public final class InterruptibleTaskTest extends TestCase {

  // Regression test for a deadlock where a task could be stuck busy waiting for the task to
  // transition to DONE
  public void testInterruptThrows() throws Exception {
    CountDownLatch isInterruptibleRegistered = new CountDownLatch(1);
    SettableFuture<String> taskResult = SettableFuture.create();
    InterruptibleTask<String> task =

        }

        File outputMarker = getOutputMarker();
        outputMarker.getParentFile().mkdirs();
        Files.write(outputMarker.toPath(), "done".getBytes(StandardCharsets.UTF_8));
    }

    @OutputFile
    public File getOutputMarker() {
        return new File(projectLayout.getBuildDirectory().getAsFile().get(), "markers/" + getName());
    }

  }

  public void testToArray() {
    // need explicit type parameter to avoid javac warning!?
    List<Byte> none = Arrays.<Byte>asList();
    assertThat(Bytes.toArray(none)).isEqualTo(EMPTY);

    List<Byte> one = Arrays.asList((byte) 1);
    assertThat(Bytes.toArray(one)).isEqualTo(ARRAY1);

    byte[] array = {(byte) 0, (byte) 1, (byte) 0x55};

			go func(i int, set *erasureObjects) {
				defer wg.Done()
				err := set.listPath(listCtx, o, innerResults)
				mu.Lock()
				defer mu.Unlock()
				if err == nil {
					allAtEOF = false
				}
				errs[i] = err
			}(len(errs), set)
			errs = append(errs, nil)
		}
	}
	mu.Unlock()

	// Gather results to a single channel.
	// Quorum is one since we are merging across sets.