REGISTER_OP("TestNonCommUnavailable")
    .Output("out: string")
    .Doc(R"doc(Test non-communication op throwing Unavailable error.)doc");

REGISTER_OP("TestCommUnavailable")
    .Output("out: string")
    .SetIsDistributedCommunication()
    .Doc(R"doc(Test communication op throwing Unavailable error.)doc");

// Kernel that throws an Unavailable error.

例如，你可以建立一個名為 `main.py` 的檔案，其中包含以下內容：

```Python hl_lines="3"
import os

name = os.getenv("MY_NAME", "World")
print(f"Hello {name} from Python")
```

/// tip

第二個參數是 [`os.getenv()`](https://docs.python.org/3.8/library/os.html#os.getenv) 的預設回傳值。

如果沒有提供，預設值為 `None`，這裡我們提供 `"World"` 作為預設值。

///

然後你可以呼叫這個 Python 程式：

//// tab | Linux, macOS, Windows Bash

<div class="termy">

```console

	// of the timezone used for the date fields), many competing extra fields
	// have been invented. Pervasive use effectively makes them "official".
	//
	// See http://mdfs.net/Docs/Comp/Archiving/Zip/ExtraField
	zip64ExtraID       = 0x0001 // Zip64 extended information
	ntfsExtraID        = 0x000a // NTFS
	unixExtraID        = 0x000d // UNIX
	extTimeExtraID     = 0x5455 // Extended timestamp

    /**
     * Get the value for the key 'logging.search.docs.enabled'. <br>
     * The value is, e.g. true <br>
     * comment: Whether to enable search docs logging.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getLoggingSearchDocsEnabled();

    /**
     * Is the property for the key 'logging.search.docs.enabled' true? <br>
     * The value is, e.g. true <br>

    try {
      getList().subList(1, 0);
      fail("subList(1, 0) should throw");
    } catch (IndexOutOfBoundsException expected) {
    } catch (IllegalArgumentException expected) {
      /*
       * The subList() docs claim that this should be an
       * IndexOutOfBoundsException, but many JDK implementations throw
       * IllegalArgumentException:
       * https://bugs.openjdk.org/browse/JDK-4506427
       */
    }
  }

    try {
      getList().subList(1, 0);
      fail("subList(1, 0) should throw");
    } catch (IndexOutOfBoundsException expected) {
    } catch (IllegalArgumentException expected) {
      /*
       * The subList() docs claim that this should be an
       * IndexOutOfBoundsException, but many JDK implementations throw
       * IllegalArgumentException:
       * https://bugs.openjdk.org/browse/JDK-4506427
       */
    }
  }

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

## ユーザー名の確認 { #check-the-username }

より完全な例です。

依存関係を使ってユーザー名とパスワードが正しいかを確認します。

これには、Python 標準モジュール [`secrets`](https://docs.python.org/3/library/secrets.html) を用いてユーザー名とパスワードを検証します。

`secrets.compare_digest()` は `bytes` か、ASCII 文字（英語の文字）のみを含む `str` を受け取る必要があります。つまり、`Sebastián` のように `á` を含む文字ではそのままでは動作しません。

                final Map<String, String> params = new LinkedHashMap<>();
                params.put("ID", e.getId());
                params.put("Query ID", e.getQueryId());
                params.put("Doc ID", e.getDocId());
                params.put("User Session ID", e.getUserSessionId());
                params.put("URL", e.getUrl());
                params.put("URL ID", e.getUrlId());

### Added
_Nothing has changed._

### Changed
- k8s.io/kube-openapi: 743ec37 → 594e756

### Removed
_Nothing has changed._



# v1.16.9

[Documentation](https://docs.k8s.io)

## Downloads for v1.16.9

filename | sha512 hash
-------- | -----------

- Migrated `pkg/scheduler/framework/preemption` to use [contextual logging](https://k8s.io/docs/concepts/cluster-administration/system-logs/#contextual-logging). ([#116835](https://github.com/kubernetes/kubernetes/pull/116835), [@mengjiao-liu](https://github.com/mengjiao-liu))