}
	r.onReaderExit = func() {
		close(r.decoded)
		readCloser.Close()
		for range r.input {
			// Read until EOF trickles through.
			// Otherwise, we risk the decoder hanging.
		}
		r.readerWg.Done()
	}

	// We cannot reuse as we are sending parsed objects elsewhere.
	simdjson.ParseNDStream(readCloser, r.input, nil)
	r.readerWg.Add(1)
	go r.startReader()
	return &r
}

      @Override
      public Class<?> loadClass(String name) throws ClassNotFoundException {
        if (disallowedClassNames.contains(name)) {
          throw new ClassNotFoundException("I'm sorry Dave, I'm afraid I can't do that.");
        }
        if (name.startsWith(concurrentPackage)) {
          Class<?> c = findLoadedClass(name);
          if (c == null) {
            return super.findClass(name);

/// note | 注意

如果你是 Python 專家，而且已經完全了解型別提示，可以直接跳到下一章。

///

## 動機 { #motivation }

先從一個簡單的例子開始：

{* ../../docs_src/python_types/tutorial001_py310.py *}

執行這個程式會輸出：

```
John Doe
```

這個函式會做以下事情：

* 接收 `first_name` 與 `last_name`。
* 用 `title()` 把每個字的第一個字母轉成大寫。
* 用一個空白把它們<dfn title="把它們合在一起，成為一個。將其中一個的內容接在另一個後面。">串接</dfn>起來。

{* ../../docs_src/python_types/tutorial001_py310.py hl[2] *}

		eventArgsList := make([]eventArgs, 0, len(fanOutEntries))
		for {
			var objInfos []ObjectInfo
			var errs []error

			var done bool
			if len(fanOutEntries) < concurrentSize {
				objInfos, errs = fanOutPutObject(ctx, bucket, objectAPI, fanOutEntries, buf.Bytes()[:n], fanOutOpts)
				done = true
			} else {
				objInfos, errs = fanOutPutObject(ctx, bucket, objectAPI, fanOutEntries[:concurrentSize], buf.Bytes()[:n], fanOutOpts)

    listenableFuture.addListener(singleCallListener, directExecutor());
    assertThat(listenableFuture.get()).isEqualTo(DATA1);

    // 'spy' should have been ignored since 'abstractFuture' was done before
    // a listener was added.
    assertFalse(spy.wasExecuted);
    assertTrue(singleCallListener.wasCalled());
    assertTrue(listenableFuture.isDone());
  }

 * regular sets respectively. For the sorted sets, it's a thin wrapper around {@link
 * java.util.TreeSet}.
 *
 * @see ImmutableSortedSet
 * @author Hayward Chan
 */
@SuppressWarnings("serial") // Serialization only done in GWT.
public abstract class ImmutableSet<E> extends ImmutableCollection<E> implements Set<E> {
  ImmutableSet() {}

  public static <E> Collector<E, ?, ImmutableSet<E>> toImmutableSet() {

        "bar"
    ],
    "images": [
        {
            "url": "http://example.com/baz.jpg",
            "name": "The Foo live"
        },
        {
            "url": "http://example.com/dave.jpg",
            "name": "The Baz"
        }
    ]
}
```

/// info | Информация

Заметьте, что теперь у ключа `images` есть список объектов изображений.

///

 * support {@code remove()}.
 *
 * @author Jared Levy
 */
@GwtCompatible
@NullMarked
public class MapsTransformValuesUnmodifiableIteratorTest extends MapInterfaceTest<String, String> {
  // TODO(jlevy): Move shared code of this class and MapsTransformValuesTest
  // to a superclass.

  public MapsTransformValuesUnmodifiableIteratorTest() {
    super(true, true, false /*supportsPut*/, true, true, false);
  }

 * Executor, and sequentially such that no two will ever be running at the same time.
 *
 * <p>Tasks submitted to {@link #execute(Runnable)} are executed in FIFO order.
 *
 * <p>The execution of tasks is done by one thread as long as there are tasks left in the queue.
 * When a task is {@linkplain Thread#interrupt interrupted}, execution of subsequent tasks
 * continues. See {@link QueueWorker#workOnQueue} for details.
 *

That means that **any value** read in Python from an environment variable **will be a `str`**, and any conversion to a different type or any validation has to be done in code.

You will learn more about using environment variables for handling **application settings** in the [Advanced User Guide - Settings and Environment Variables](./advanced/settings.md).