private static File file(File first, String... more) {
    // not very efficient, but should definitely be correct
    File file = first;
    for (String name : more) {
      file = new File(file, name);
    }
    return file;
  }

Потім, використовуючи `random.choice()`, ми можемо отримати випадкове значення зі списку, тобто отримуємо кортеж із `(id, name)`. Це може бути щось на зразок `("imdb-tt0371724", "The Hitchhiker's Guide to the Galaxy")`.

Далі ми **присвоюємо ці два значення** кортежу змінним `id` і `name`.

Тож, якщо користувач не вказав ID елемента, він все одно отримає випадкову рекомендацію.

</div>

////

## Pythonで環境変数を読み取る

環境変数をPythonの**外側**、ターミナル（や他の方法）で作成し、**Python内で読み取る**こともできます。

例えば、以下のような`main.py`ファイルを用意します:

```Python hl_lines="3"
import os

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

/// tip

<a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> の第2引数は、デフォルトで返される値を指定します。

   * expression {@code o -> Optional.toJavaUtil(o)} instead.
   *
   * @since 33.4.0 (but since 21.0 in the JRE flavor)
   */
  @SuppressWarnings({
    "AmbiguousMethodReference", // We chose the name despite knowing this risk.
    "NullableOptional", // Null passthrough is reasonable for type conversions
  })
  // If users use this when they shouldn't, we hope that NewApi will catch subsequent Optional calls

  }

  /**
   * Returns an immutable sorted multiset containing the elements of a sorted multiset, sorted by
   * the same {@code Comparator}. That behavior differs from {@link #copyOf(Iterable)}, which always
   * uses the natural ordering of the elements.
   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is

            result.setCronExpression(DfTypeUtil.toString(source.get("cronExpression")));
            result.setJobLogging(DfTypeUtil.toBoolean(source.get("jobLogging")));
            result.setName(DfTypeUtil.toString(source.get("name")));
            result.setScriptData(DfTypeUtil.toString(source.get("scriptData")));
            result.setScriptType(DfTypeUtil.toString(source.get("scriptType")));

	"sync"
	"time"

	"github.com/minio/minio/internal/logger"
	"github.com/minio/pkg/v3/console"
)

// a bucketMetacache keeps track of all caches generated
// for a bucket.
type bucketMetacache struct {
	// Name of bucket
	bucket string

	// caches indexed by id.
	caches map[string]metacache
	// cache ids indexed by root paths
	cachesRoot map[string][]string `msg:"-"`

	// Internal state
	mu      sync.RWMutex `msg:"-"`

     * Stores a failure URL with error information for later analysis.
     *
     * @param crawlerContext the crawler context
     * @param urlQueue the URL queue containing the failed URL
     * @param errorName the name/type of the error
     * @param e the throwable that caused the failure
     * @return the stored FailureUrl entity
     */

        // Test that the constructor initializes the object correctly
        MsrpcShareEnum shareEnum = new MsrpcShareEnum(TEST_SERVER_NAME);
        assertNotNull(shareEnum);

        // Verify the server name is properly formatted with double backslashes
        try {
            Field servernameField = srvsvc.ShareEnumAll.class.getDeclaredField("servername");
            servernameField.setAccessible(true);

     *   <li>POST - Submits data to be processed to a specified resource.</li>
     *   <li>PUT - Updates a current resource with new data.</li>
     *   <li>DELETE - Deletes the specified resource.</li>
     *   <li>HEAD - Same as GET but returns only HTTP headers and no document body.</li>
     *   <li>OPTIONS - Returns the HTTP methods that the server supports.</li>
     *   <li>TRACE - Echoes back the received request, used for debugging.</li>