{!../../docs_src/python_types/tutorial010.py!}
```

& ⤴️, 🔄, 👆 🤚 🌐 👨‍🎨 🐕‍🦺:

<img src="/img/python-types/image06.png">

## Pydantic 🏷

<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> 🐍 🗃 🎭 📊 🔬.

👆 📣 "💠" 💽 🎓 ⏮️ 🔢.

&amp; 🔠 🔢 ✔️ 🆎.

⤴️ 👆 ✍ 👐 👈 🎓 ⏮️ 💲 &amp; ⚫️ 🔜 ✔ 💲, 🗜 👫 ☑ 🆎 (🚥 👈 💼) &amp; 🤝 👆 🎚 ⏮️ 🌐 💽.

import okio.BufferedSink

open class ForwardingRequestBody(
  delegate: RequestBody?,
) : RequestBody() {
  private val delegate: RequestBody

  fun delegate(): RequestBody = delegate

  override fun contentType(): MediaType? = delegate.contentType()

  @Throws(IOException::class)
  override fun contentLength(): Long = delegate.contentLength()

  @Throws(IOException::class)
  override fun writeTo(sink: BufferedSink) {

import org.codelibs.fess.app.web.admin.dict.protwords.EditForm;

/**
 * Request body class for protected words dictionary edit operations in the admin REST API.
 * This class extends EditForm to inherit the necessary form validation and binding capabilities
 * for protected words dictionary management operations.
 */
public class EditBody extends EditForm {

    /**
     * Default constructor.
     */
    public EditBody() {

import org.codelibs.fess.app.web.admin.dict.stemmeroverride.EditForm;

/**
 * Request body class for stemmer override dictionary edit operations in the admin REST API.
 * This class extends EditForm to inherit the necessary form validation and binding capabilities
 * for stemmer override dictionary management operations.
 */
public class EditBody extends EditForm {

    /**
     * Default constructor.
     */
    public EditBody() {

/**
 * A dictionary creator for stopwords files.
 * This class is responsible for creating {@link StopwordsFile} instances
 * from files that match the pattern "stopwords.*\\.txt".
 */
public class StopwordsCreator extends DictionaryCreator {
    private static final Logger logger = LogManager.getLogger(StopwordsCreator.class);

    /**
     * Constructs a new creator for stopwords dictionaries.

 * this class offers:
 *
 *  * **Read/write:** read and write using the same operator.
 *  * **Random access:** access any position within the file.
 *  * **Shared channels:** read and write a file channel that's shared between
 * multiple operators. Note that although the underlying [FileChannel] may be shared,
 * each [FileOperator] should not be.
 */
internal class FileOperator(

    }
  }

  @Override
  protected void tearDown() {
    stack.runTearDown();
  }

  static final Exception EXCEPTION = new Exception();

  static final class ExampleClassUnderTest {
    static final Logger logger = Logger.getLogger(ExampleClassUnderTest.class.getName());

    static void foo() {
      logger.log(Level.INFO, "message", EXCEPTION);
    }

    private ExampleClassUnderTest() {}
  }

  }

  // TODO(cpovirk): Use standard Javadoc form for SimpleForwarding* class and constructor
  /**
   * A simplified version of {@link ForwardingListenableFuture} where subclasses can pass in an
   * already constructed {@link ListenableFuture} as the delegate.
   *
   * @since 9.0
   */
  public abstract static class SimpleForwardingListenableFuture<V extends @Nullable Object>
      extends ForwardingListenableFuture<V> {

import org.codelibs.fess.crawler.entity.ResponseData;
import org.codelibs.fess.crawler.exception.CrawlingAccessException;

/**
 * Utility class for handling response data.
 */
public final class ResponseDataUtil {

    /**
     * Private constructor to prevent instantiation of this utility class.
     */
    private ResponseDataUtil() {
    }

    /**

/**
 * @author shinsuke
 *
 */
public class DataServiceImplTest extends PlainTestCase {
    public DataService dataService;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        StandardCrawlerContainer container = new StandardCrawlerContainer().singleton("dataHelper", MemoryDataHelper.class)//
                .singleton("dataService", DataServiceImpl.class);