```

/// tip | 팁

<a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> 의 두 번째 인자는 반환할 기본값입니다.

여기서는 `"World"`를 넣었기에 기본값으로써 사용됩니다. 넣지 않으면 `None` 이 기본값으로 사용됩니다.

///

그러면 해당 파이썬 프로그램을 다음과 같이 호출할 수 있습니다:

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

<div class="termy">

```console
// Here we don't set the env var yet
$ python main.py

import java.util.concurrent.locks.ReentrantReadWriteLock;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unittests for {@link CycleDetectingLockFactory}.
 *
 * @author Darick Tong
 */
@NullUnmarked
public class CycleDetectingLockFactoryTest extends TestCase {

  private ReentrantLock lockA;
  private ReentrantLock lockB;
  private ReentrantLock lockC;

			ContentType:          mimedb.TypeByExtension(path.Ext(object)),
			DisableContentSha256: true,
			Checksum:             minio.ChecksumFullObjectCRC32C,
		})
		stopFn(oi.Size, err)
		pr.CloseWithError(err)
		wa.wg.Done()
	}()
	return wa, nil
}

func (f *sftpDriver) Filecmd(r *sftp.Request) (err error) {
	stopFn := globalSftpMetrics.log(r, f.AccessKey())
	defer stopFn(0, err)

	clnt, err := f.getMinIOClient()

internal fun inet6AddressToAscii(address: ByteArray): String {
  // Go through the address looking for the longest run of 0s. Each group is 2-bytes.
  // A run must be longer than one group (section 4.2.2).
  // If there are multiple equal runs, the first one must be used (section 4.2.3).
  var longestRunOffset = -1
  var longestRunLength = 0
  run {
    var i = 0
    while (i < address.size) {
      val currentRunOffset = i

    /**
     * Gets the model building listener to notify during the build process.
     *
     * @return The model building listener to notify or {@code null} if none.
     */
    ModelBuildingListener getModelBuildingListener();

    /**
     * Sets the model building listener to notify during the build process.
     *

	"github.com/minio/minio/internal/deadlineconn"
	"github.com/minio/minio/internal/pubsub"
	"github.com/minio/mux"
)

const (
	// apiVersion is a major version of the entire api.
	// Bumping this should only be done when overall,
	// incompatible changes are made, not when adding a new handler
	// or changing an existing handler.
	apiVersion = "v1"

	// RoutePath is the remote path to connect to.

     *
     * @param req
     *            The servlet request
     * @param resp
     *            The servlet response
     * @param skipAuthentication
     *            If true the negotiation is only done if it is
     *            initiated by the client (MSIE post requests after successful NTLM SSP
     *            authentication). If false and the user has not been authenticated yet

例えば、パスパラメータ`item_id`に対して`title`のメタデータを宣言するには以下のようにします:

{* ../../docs_src/path_params_numeric_validations/tutorial001.py hl[8] *}

/// note | 備考

パスの一部でなければならないので、パスパラメータは常に必須です。

そのため、`...`を使用して必須と示す必要があります。

それでも、`None`で宣言しても、デフォルト値を設定しても、何の影響もなく、常に必要とされていることに変わりはありません。

///

## 必要に応じてパラメータを並び替える

クエリパラメータ`q`を必須の`str`として宣言したいとしましょう。

また、このパラメータには何も宣言する必要がないので、`Query`を使う必要はありません。

    assertTrue("Expected another permutation, but there was none.", permutations.hasNext());
    assertEquals(expectedPermutation, permutations.next());
  }

  private <T> void assertNoMorePermutations(Iterator<List<T>> permutations) {
    assertFalse("Expected no more permutations, but there was one.", permutations.hasNext());
    try {
      permutations.next();

// corresponding error value. NB When there is more than one error value that
// occurs maximum number of times, the error value returned depends on how
// golang's map orders keys. This doesn't affect correctness as long as quorum
// value is greater than or equal to simple majority, since none of the equally
// maximal values would occur quorum or more number of times.