この引数を省略するとデフォルト値として`None`が返されますが、ここではデフォルト値として`"World"`を指定しています。

///

次に、このPythonプログラムを呼び出します。

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

<div class="termy">

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

// As we didn't set the env var, we get the default value

Hello World from Python

// But if we create an environment variable first
$ export MY_NAME="Wade Wilson"

// And then call the program again

   * @throws IllegalStateException if a maximum size or weight was already set
   */
  @CanIgnoreReturnValue
  public CacheBuilder<K, V> maximumSize(long maximumSize) {
    checkState(
        this.maximumSize == UNSET_INT, "maximum size was already set to %s", this.maximumSize);
    checkState(
        this.maximumWeight == UNSET_INT,
        "maximum weight was already set to %s",
        this.maximumWeight);

    protected void removeRange(int fromIndex, int toIndex) {
      subList(fromIndex, toIndex).clear();
    }

    @Override
    @ParametricNullness
    public T set(int index, @ParametricNullness T element) {
      return forwardList.set(reverseIndex(index), element);
    }

    @Override
    @ParametricNullness
    public T get(int index) {
      return forwardList.get(reverseIndex(index));
    }

        }
    }

    /**
     * Load the configuration.
     * @return The number of loaded configurations.
     */
    public abstract int load();

    /**
     * Set the interval for reloading.
     * @param reloadInterval The interval for reloading.
     */
    public void setReloadInterval(final long reloadInterval) {
        this.reloadInterval = reloadInterval;
    }

    public void test_generate_no_command_list() throws Exception {
        final File outputFile = File.createTempFile("command_generator", ".out");
        try {
            outputFile.delete();
            // Don't set command list (null)
            generator.generate("test_id", outputFile);
            assertTrue(true);
        } catch (final Exception e) {
            assertTrue(true);
        } finally {

        // When - set all to true
        serverData.encryptedPasswords = true;
        serverData.signaturesEnabled = true;
        serverData.signaturesRequired = true;

        // Then
        assertTrue(serverData.encryptedPasswords);
        assertTrue(serverData.signaturesEnabled);
        assertTrue(serverData.signaturesRequired);

        // When - set all to false

 */
package org.codelibs.fess.crawler.client.ftp;

import java.io.File;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.ftpserver.FtpServer;
import org.apache.ftpserver.FtpServerFactory;
import org.apache.ftpserver.ftplet.FtpException;
import org.apache.ftpserver.ftplet.UserManager;

            return destroyed;
        }

        public void destroy() {
            this.destroyed = true;
        }

        public static void resetCounter() {
            instanceCounter.set(0);
        }
    }

    /**
     * Singleton test component for testing singleton behavior
     */
    public static class SingletonTestComponent {
        private static int instanceCount = 0;

  }

  @Test
  fun readTimeouts() {
    // This relies on the fact that MockWebServer doesn't close the
    // connection after a response has been sent. This causes the client to
    // try to read more bytes than are sent, which results in a timeout.
    server.enqueue(
      MockResponse
        .Builder()
        .body("ABC")
        .clearHeaders()
        .addHeader("Content-Length: 4")

        return new Smb2SessionSetupResponse(tc.getConfig());
    }

    /**
     * Sets whether this request is for session binding
     *
     * @param sessionBinding
     *            the sessionBinding to set
     */
    public void setSessionBinding(final boolean sessionBinding) {
        this.sessionBinding = sessionBinding;
    }

    /**
     * {@inheritDoc}
     *