{* ../../docs_src/security/tutorial006_an_py310.py hl[4,8,12] *}

第一次打开 URL（或在 API 文档中点击 **Execute** 按钮）时，浏览器要求输入用户名与密码：

<img src="/img/tutorial/security/image12.png">

## 检查用户名 { #check-the-username }

以下是更完整的示例。

使用依赖项检查用户名与密码是否正确。

为此要使用 Python 标准模块 [`secrets`](https://docs.python.org/3/library/secrets.html) 检查用户名与密码。

/// info | Дополнительная информация

Узнайте больше о тегах в [Конфигурации операции пути](path-operation-configuration.md#tags).

///

### Проверьте документацию { #check-the-docs }

Теперь, если вы проверите документацию, вы увидите всю дополнительную информацию:

<img src="/img/tutorial/metadata/image02.png">

### Порядок расположения тегов { #order-of-tags }

			want := hashDeterministicString(tt.arg)
			m := tt.arg
			for range n {
				if got := hashDeterministicString(m); got != want {
					t.Errorf("hashDeterministicString() = %v, want %v", got, want)
				}
			}
			// Check casual collisions
			if m == nil {
				m = make(map[string]string)
			}
			m["12312312"] = ""
			if got := hashDeterministicString(m); got == want {

	}

	vars := mux.Vars(r)
	bucket := vars["bucket"]
	object, err := unescapePath(vars["object"])
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	// Check for auth type to return S3 compatible error.
	cred, _, s3Error := checkRequestAuthTypeCredential(ctx, r, policy.GetObjectAction)
	if s3Error != ErrNone {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)

    }

    @Override
    @ParametricNullness
    public E next() {
      if (!hasPeeked) {
        return iterator.next();
      }
      // The cast is safe because of the hasPeeked check.
      E result = uncheckedCastNullableTToT(peekedElement);
      hasPeeked = false;
      peekedElement = null;
      return result;
    }

    @Override
    public void remove() {

    }

    @Override
    @ParametricNullness
    public E next() {
      if (!hasPeeked) {
        return iterator.next();
      }
      // The cast is safe because of the hasPeeked check.
      E result = uncheckedCastNullableTToT(peekedElement);
      hasPeeked = false;
      peekedElement = null;
      return result;
    }

    @Override
    public void remove() {

	ilmTransitionMissedImmediateTasksMD = NewCounterMD(transitionMissedImmediateTasks, "Number of missed immediate ILM transition tasks")
	ilmVersionsScannedMD                = NewCounterMD(versionsScanned, "Total number of object versions checked for ILM actions since server start")
)

// loadILMMetrics - `MetricsLoaderFn` for ILM metrics.
func loadILMMetrics(_ context.Context, m MetricValues, _ *metricsCache) error {
	if globalExpiryState != nil {

            .log(
                SEVERE,
                String.format(Locale.ROOT, "Caught an exception in %s.  Shutting down.", t),
                e);
      } catch (Throwable errorInLogging) { // sneaky checked exception
        // If logging fails, e.g. due to missing memory, at least try to log the
        // message and the cause for the failed logging.
        System.err.println(e.getMessage());

    if (element instanceof Entry) {
      Entry<?, ?> entry = (Entry<?, ?>) element;
      element = mapEntry(entry.getKey(), entry.getValue());
    }
    assertTrue(collection.contains(element)); // sanity check
    iterator.remove();
    assertFalse(collection.contains(element));
    assertEquals(originalSize - 1, collection.size());
  }

  @CollectionFeature.Require({KNOWN_ORDER, SUPPORTS_ITERATOR_REMOVE})

        // Under some edge cases (such as the proxy of JDK types serialized and then deserialized)
        // the proxy type may not be the same.
        // We first check isProxyClass() so that the common case of comparing with non-proxy objects
        // is efficient.
        || (Proxy.isProxyClass(arg.getClass())