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

 * the License.
 */

package com.google.common.util.concurrent;

import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.util.concurrent.Futures.getDone;
import static com.google.common.util.concurrent.MoreExecutors.rejectionPropagatingExecutor;
import static com.google.common.util.concurrent.Platform.restoreInterruptIfIsInterruptedException;

 */

import gradlebuild.basics.gradleProperty
import gradlebuild.identity.extension.GradleModuleExtension

plugins {
    id("publishing")
}

val artifactoryUrl
    get() = System.getenv("GRADLE_INTERNAL_REPO_URL") ?: ""

val artifactoryUserName
    get() = project.providers.gradleProperty("artifactoryUserName").orNull

val artifactoryUserPassword

 *   INSTANCE;
 *   public void funnel(Person person, PrimitiveSink into) {
 *     into.putUnencodedChars(person.getFirstName())
 *         .putUnencodedChars(person.getLastName())
 *         .putInt(person.getAge());
 *   }
 * }
 * }
 *
 * @author Dimitris Andreou
 * @since 11.0
 */
@Beta
@DoNotMock("Implement with a lambda")
public interface Funnel<T extends @Nullable Object> extends Serializable {

  /**

	"runtime"
	"strings"
	"testing"
)

// TestMain executes the test binary as the addr2line command if
// GO_ADDR2LINETEST_IS_ADDR2LINE is set, and runs the tests otherwise.
func TestMain(m *testing.M) {
	if os.Getenv("GO_ADDR2LINETEST_IS_ADDR2LINE") != "" {
		main()
		os.Exit(0)
	}

	os.Setenv("GO_ADDR2LINETEST_IS_ADDR2LINE", "1") // Set for subprocesses to inherit.
	os.Exit(m.Run())
}

    private int getStatus(NetServerEnum2Response response) throws Exception {
        Field field = getSuperclassField(response.getClass(), "status");
        field.setAccessible(true);
        return field.getInt(response);
    }

    private void setStatus(NetServerEnum2Response response, int value) throws Exception {
        Method method = getSuperclassMethod(response.getClass(), "setStatus", int.class);

     *
     * @return the application type string, or empty string if not set
     */
    public static String getAppType() {
        final String appType = System.getenv(FESS_APP_TYPE);
        if (StringUtil.isNotBlank(appType)) {
            return appType;
        }
        return StringUtil.EMPTY;
    }

    /**

     * Private constructor to prevent instantiation of this utility class.
     */
    private BufferCache() {
        // Utility class - not instantiable
    }

    private static final int MAX_BUFFERS = Config.getInt("jcifs.smb1.smb.maxBuffers", 16);
    private static final int MAX_BUFFER_SIZE = 0x100000; // 1MB maximum

    // Use concurrent queue for lock-free operations

        // Convert from little-endian wire format to Java UUID
        ByteBuffer bb = ByteBuffer.wrap(bytes).order(java.nio.ByteOrder.LITTLE_ENDIAN);

        // Read GUID components in little-endian order
        int data1 = bb.getInt(); // first 4 bytes (little-endian)
        short data2 = bb.getShort(); // next 2 bytes (little-endian)
        short data3 = bb.getShort(); // next 2 bytes (little-endian)

    private static final int OPEN_FN_FAIL_IF_EXISTS = 0x00;
    private static final int OPEN_FN_OPEN = 0x01;
    private static final int OPEN_FN_TRUNC = 0x02;

    private static final int BATCH_LIMIT = Config.getInt("jcifs.smb1.smb.client.OpenAndX.ReadAndX", 1);

    int flags, desiredAccess, searchAttributes, fileAttributes, creationTime, openFunction, allocationSize;

    // flags is NOT the same as flags member