Тоді, у випадку запиту за URL:

```
http://localhost:8000/items/?q=foo&q=bar
```

Ви отримаєте кілька значень *query параметра* `q` (`foo` і `bar`) у вигляді списку `list` в Python у Вашій *функції обробки шляху*, у *параметрі функції* `q`.

Отже, відповідь на цей URL буде:

```JSON
{
  "q": [
    "foo",
    "bar"
  ]
}
```

/// tip | Підказка

<nav class="main-header navbar navbar-expand navbar-dark navbar-secondary">
	<ul class="navbar-nav">
		<li class="nav-item">
			<a class="nav-link" data-widget="pushmenu" href="#">
				<em class="fas fa-bars">
				<span class="sr-only"><la:message
						key="labels.admin_toggle_navi" /></span>
			</a>
		</li>
	</ul>
	<ul class="navbar-nav ml-auto">
		<c:if test="${eoled}">

import org.jspecify.annotations.Nullable;

/**
 * A class that implements {@code Comparable} without generics, such as those found in libraries
 * that support Java 1.4 and before. Our library needs to do the bare minimum to accommodate such
 * types, though their use may still require an explicit type parameter and/or warning suppression.
 *
 * @author Kevin Bourrillion
 */

            return ("{" + c + "}").toCharArray();
          }
        };
    EscaperAsserts.assertBasic(wrappingEscaper);
    // '[' and '@' lie either side of [A-Z].
    assertThat(wrappingEscaper.escape("[FOO@BAR]")).isEqualTo("{[}FOO{@}BAR{]}");
  }

  public void testSafeRange_maxLessThanMin() throws IOException {
    // Basic escaping of unsafe chars (wrap them in {,}'s)
    CharEscaper wrappingEscaper =

@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class CollectionSerializationTester<E> extends AbstractCollectionTester<E> {
  @CollectionFeature.Require(SERIALIZABLE)
  public void testReserialize() {
    // For a bare Collection, the most we can guarantee is that the elements are preserved.
    assertEqualIgnoringOrder(actualContents(), SerializableTester.reserialize(actualContents()));
  }

{* ../../docs_src/header_params/tutorial003.py hl[9] *}

다음과 같은 두 개의 HTTP 헤더를 전송하여 해당 *경로* 와 통신할 경우:

```
X-Token: foo
X-Token: bar
```

응답은 다음과 같습니다:

```JSON
{
    "X-Token values": [
        "bar",
        "foo"
    ]
}
```

## 요약

`Header`는 `Query`, `Path`, `Cookie`와 동일한 패턴을 사용하여 선언합니다.

label:
	JB	-4(PC) // JCS -4(PC)
	JB	label // JCS 17

// LTYPEC spec3	{ outcode($1, &$2); }
	JCS	2(PC)
	JMP	-4(PC)
	JCS	2(PC)
	JMP	label // JMP 17
	JCS	2(PC)
	JMP	foo+4(SB)
	JCS	2(PC)
	JMP	bar<>+4(SB)
	JCS	2(PC)
	JMP	bar<>+4(SB)(R11*4)
	JCS	2(PC)
	JMP	*4(SP) // JMP 4(SP)
	JCS	2(PC)
	JMP	*(R12) // JMP (R12)
	JCS	2(PC)
//	JMP	*(R12*4) // TODO: This line is silently dropped on the floor!
	JCS	2(PC)

  }

  @Override
  protected Map<String, Map<Integer, Character>> makePopulatedMap() {
    Table<Integer, String, Character> table = HashBasedTable.create();
    table.put(1, "foo", 'a');
    table.put(1, "bar", 'b');
    table.put(3, "foo", 'c');
    return unmodifiableTable(table).columnMap();
  }

    assertUnescaped(e, '@');

    // Don't use plus for spaces
    assertEscaping(e, "%20", ' ');

    assertEquals("safe%20with%20spaces", e.escape("safe with spaces"));
    assertEquals("foo@bar.com", e.escape("foo@bar.com"));
  }

  private UrlEscaperTesting() {}

{* ../../docs_src/header_params/tutorial003_an_py310.py hl[9] *}

Si te comunicas con esa *path operation* enviando dos headers HTTP como:

```
X-Token: foo
X-Token: bar
```

El response sería como:

```JSON
{
    "X-Token values": [
        "bar",
        "foo"
    ]
}
```

## Recapitulación

Declara headers con `Header`, usando el mismo patrón común que `Query`, `Path` y `Cookie`.