Затем можно использовать `secrets.compare_digest()`, чтобы убедиться, что `credentials.username` равен `"stanleyjobson"`, а `credentials.password` — `"swordfish"`.

{* ../../docs_src/security/tutorial007_an_py310.py hl[1,12:24] *}

Это было бы похоже на:

```Python
if not (credentials.username == "stanleyjobson") or not (credentials.password == "swordfish"):
    # Вернуть ошибку
    ...
```

    testReverse(new double[] {1}, 0, 1, new double[] {1});
    testReverse(new double[] {1, 2}, 0, 2, new double[] {2, 1});
    testReverse(new double[] {3, 1, 1}, 0, 2, new double[] {1, 3, 1});
    testReverse(new double[] {3, 1, 1}, 0, 1, new double[] {3, 1, 1});
    testReverse(new double[] {-1, 1, -2, 2}, 1, 3, new double[] {-1, -2, 1, 2});
  }

Luego podemos usar `secrets.compare_digest()` para asegurar que `credentials.username` es `"stanleyjobson"`, y que `credentials.password` es `"swordfish"`.

{* ../../docs_src/security/tutorial007_an_py310.py hl[1,12:24] *}

Esto sería similar a:

```Python
if not (credentials.username == "stanleyjobson") or not (credentials.password == "swordfish"):
    # Devuelve algún error
    ...
```

你可以在任何*路径操作*接收 `request` 之前，添加要与该 `request` 一起运行的代码。

也可以在生成 `response` 之后、返回之前添加代码。

例如，你可以添加一个自定义请求头 `X-Process-Time`，其值为处理请求并生成响应所花费的秒数：

{* ../../docs_src/middleware/tutorial001_py310.py hl[10,12:13] *}

/// tip

这里我们使用 [`time.perf_counter()`](https://docs.python.org/3/library/time.html#time.perf_counter) 而不是 `time.time()`，因为在这类场景中它可能更精确。🤓

///

## 多个中间件的执行顺序 { #multiple-middleware-execution-order }

		cfg.Delay, cfg.MaxWait, cfg.Cycle = 1, 100*time.Millisecond, time.Minute
	case "default":
		cfg.Delay, cfg.MaxWait, cfg.Cycle = 2, time.Second, time.Minute
	case "slow":
		cfg.Delay, cfg.MaxWait, cfg.Cycle = 10, 15*time.Second, time.Minute
	case "slowest":
		cfg.Delay, cfg.MaxWait, cfg.Cycle = 100, 15*time.Second, 30*time.Minute
	default:
		return cfg, fmt.Errorf("unknown '%s' value", speed)
	}

	return cfg, nil
}

Dann können wir `secrets.compare_digest()` verwenden, um sicherzustellen, dass `credentials.username` `"stanleyjobson"` und `credentials.password` `"swordfish"` ist.

{* ../../docs_src/security/tutorial007_an_py310.py hl[1,12:24] *}

Dies wäre das gleiche wie:

```Python
if not (credentials.username == "stanleyjobson") or not (credentials.password == "swordfish"):
    # Einen Error zurückgeben
    ...
```

Then we can use `secrets.compare_digest()` to ensure that `credentials.username` is `"stanleyjobson"`, and that `credentials.password` is `"swordfish"`.

{* ../../docs_src/security/tutorial007_an_py310.py hl[1,12:24] *}

This would be similar to:

```Python
if not (credentials.username == "stanleyjobson") or not (credentials.password == "swordfish"):
    # Return some error
    ...
```

"1.1.1 OK"
"1.1.2 OK"
"1.1.3 OK"
"1.1.4 OK"
"1.1.5 OK"
"1.1.6 OK"
"1.1.7 OK"
"1.1.8 OK"
"1.2.1 OK"
"1.2.2 OK"
"1.2.3 OK"
"1.2.4 OK"
"1.2.5 OK"
"1.2.6 OK"
"1.2.7 OK"
"1.2.8 OK"
"10.1.1 OK"
"12.1.1 UNIMPLEMENTED"
"12.1.10 UNIMPLEMENTED"
"12.1.11 UNIMPLEMENTED"
"12.1.12 UNIMPLEMENTED"
"12.1.13 UNIMPLEMENTED"
"12.1.14 UNIMPLEMENTED"
"12.1.15 UNIMPLEMENTED"
"12.1.16 UNIMPLEMENTED"
"12.1.17 UNIMPLEMENTED"

你可以在任何*路徑操作*接收 `request` 之前，加入要執行的程式碼。

也可以在產生出 `response` 之後、回傳之前執行程式碼。

例如，你可以新增一個自訂標頭 `X-Process-Time`，其內容為處理請求並產生回應所花費的秒數：

{* ../../docs_src/middleware/tutorial001_py310.py hl[10,12:13] *}

/// tip

這裡我們使用 [`time.perf_counter()`](https://docs.python.org/3/library/time.html#time.perf_counter) 而不是 `time.time()`，因為在這些用例中它可能更精確。🤓

///

## 多個中介軟體的執行順序 { #multiple-middleware-execution-order }

      case 0:
        return (k == 0) ? 1 : 0;
      case 1:
        return 1;
      case -1:
        return ((k & 1) == 0) ? 1 : -1;
      case 2:
        return (k < Integer.SIZE) ? (1 << k) : 0;
      case -2:
        if (k < Integer.SIZE) {
          return ((k & 1) == 0) ? (1 << k) : -(1 << k);
        } else {
          return 0;
        }
      default: