### 类作为类型 { #classes-as-types }

你也可以把类声明为变量的类型。

假设你有一个名为 `Person` 的类，带有 name：

{* ../../docs_src/python_types/tutorial010_py310.py hl[1:3] *}

然后你可以声明一个变量是 `Person` 类型：

{* ../../docs_src/python_types/tutorial010_py310.py hl[6] *}

接着，你会再次获得所有的编辑器支持：

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

}

/* Headings in messages */
.message-content h1, .message-content h2, .message-content h3,
.message-content h4, .message-content h5, .message-content h6 {
    margin: 0.75rem 0 0.375rem; font-weight: 600; line-height: 1.3; color: #172b4d;
}
.message-content h1 { font-size: 1.25rem; }
.message-content h2 { font-size: 1.125rem; }
.message-content h3 { font-size: 1rem; }
.message-content h1:first-child, .message-content h2:first-child,

Sebastián Ramírez <******@****.***> 1774015637 +0100

  public void testAsList_subList_toArray_roundTrip() {
    char[] array = {(char) 0, (char) 1, (char) 2, (char) 3};
    List<Character> list = Chars.asList(array);
    assertThat(Chars.toArray(list.subList(1, 3))).isEqualTo(new char[] {(char) 1, (char) 2});
    assertThat(Chars.toArray(list.subList(2, 2))).isEqualTo(new char[] {});
  }

  // `primitives` can't depend on `collect`, so this is what the prod code has to return.

    Set<Integer> keySet = cache.asMap().keySet();
    assertThat(keySet).containsExactly(0, 1, 2, 3, 4, 5, 6, 7, 8, 9);

    // get saves 1, 3; 0, 2, 4 expire
    getAll(cache, asList(1, 3));
    CacheTesting.drainRecencyQueues(cache);
    ticker.advance(1, MILLISECONDS);
    assertThat(keySet).containsExactly(5, 6, 7, 8, 9, 1, 3);

    // get saves 6, 8; 5, 7, 9 expire
    getAll(cache, asList(6, 8));

        doReturn(mockIn).when(spyHandle).getInput();

        when(mockIn.readDirect(any(byte[].class), anyInt(), anyInt())).thenReturn(5);

        byte[] b = new byte[10];
        int n = spyHandle.recv(b, 1, 3);
        assertEquals(5, n);
        verify(mockIn).readDirect(eq(b), eq(1), eq(3));
    }

    @Test
    @DisplayName("send delegates to output.writeDirect with args")

    assertTrue(results.session_ticket_supported)
    assertEquals("Probably Okay", results.rating)
    // TODO map to expected versions automatically, test ignored for now.  Run manually.
    assertEquals("TLS 1.3", results.tls_version)
    assertEquals(0, results.insecure_cipher_suites.size)

    assertEquals(TlsVersion.TLS_1_3, response.handshake?.tlsVersion)
    assertEquals(Protocol.HTTP_2, response.protocol)
  }

### 타입으로서의 클래스 { #classes-as-types }

변수의 타입으로 클래스를 선언할 수도 있습니다.

이름을 가진 `Person` 클래스가 있다고 해봅시다:

{* ../../docs_src/python_types/tutorial010_py310.py hl[1:3] *}

그러면 `Person` 타입의 변수를 선언할 수 있습니다:

{* ../../docs_src/python_types/tutorial010_py310.py hl[6] *}

그리고 다시, 에디터의 모든 지원을 받을 수 있습니다:

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

    ImmutableList<Integer> list = ImmutableList.sortedCopyOf(c);
    assertEquals(asList(100), list);
  }

  public void testSortedCopyOf_natural_containsNull() {
    Collection<@Nullable Integer> c = MinimalCollection.of(1, 3, null, 2);
    assertThrows(
        NullPointerException.class, () -> ImmutableList.sortedCopyOf((Collection<Integer>) c));
  }

  public void testSortedCopyOf() {

}

// Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message
func (z *SRMetricsSummary) Msgsize() (s int) {
	s = 1 + 14 + z.ActiveWorkers.Msgsize() + 12 + msgp.Int64Size + 13 + msgp.Int64Size + 7 + z.Queued.Msgsize() + 8 + z.Proxied.Msgsize() + 8 + msgp.MapHeaderSize
	if z.Metrics != nil {
		for za0001, za0002 := range z.Metrics {
			_ = za0002