And then **FastAPI** will call that override instead of the original dependency.

{* ../../docs_src/dependency_testing/tutorial001_an_py310.py hl[26:27,30] *}

/// tip

You can set a dependency override for a dependency used anywhere in your **FastAPI** application.

{* ../../docs_src/body_nested_models/tutorial002_py310.py hl[12] *}

## Set-Typen

Aber dann denken wir darüber nach und stellen fest, dass sich die Tags nicht wiederholen sollen, es sollen eindeutige Strings sein.

Python hat einen Datentyp speziell für Mengen eindeutiger Dinge: das <abbr title="Menge">`set`</abbr>.

Deklarieren wir also `tags` als Set von Strings.

{* ../../docs_src/body_nested_models/tutorial003_py310.py hl[12] *}

	if clntHashedPayload != "" {
		query.Set(xhttp.AmzContentSha256, hashedPayload)
	}

	token := req.Form.Get(xhttp.AmzSecurityToken)
	if token != "" {
		query.Set(xhttp.AmzSecurityToken, cred.SessionToken)
	}

	query.Set(xhttp.AmzAlgorithm, signV4Algorithm)

	// Construct the query.
	query.Set(xhttp.AmzDate, t.Format(iso8601Format))
	query.Set(xhttp.AmzExpires, strconv.Itoa(expireSeconds))

        assertNotNull(dfsRootEnum.info.e);
        assertInstanceOf(netdfs.DfsEnumArray200.class, dfsRootEnum.info.e);

        // Verify DFS name is set to server name
        assertEquals(TEST_SERVER, dfsRootEnum.dfs_name);

        // Verify preferred max length is set to maximum
        assertEquals(0xFFFF, dfsRootEnum.prefmaxlen);

        // Verify totalentries is initialized
        assertNotNull(dfsRootEnum.totalentries);

import com.google.common.annotations.GwtCompatible;
import java.util.Set;

/**
 * Base class for enumerating the features of an interface to be tested.
 *
 * @param <T> The interface whose features are to be enumerated.
 * @author George van den Driessche
 */
@GwtCompatible
public interface Feature<T> {
  /** Returns the set of features that are implied by this feature. */
  Set<Feature<? super T>> getImpliedFeatures();

  public SampleElements<AnEnum> samples() {
    return new Enums();
  }

  @Override
  public Set<AnEnum> create(Object... elements) {
    AnEnum[] array = new AnEnum[elements.length];
    int i = 0;
    for (Object e : elements) {
      array[i++] = (AnEnum) e;
    }
    return create(array);
  }

  protected abstract Set<AnEnum> create(AnEnum[] elements);

  @Override
  public AnEnum[] createArray(int length) {

        Set<ConstraintViolation<ExtendedTestBean>> violations = validator.validate(bean);
        assertEquals(2, violations.size());
    }

    // Test multiple annotations on same field
    public void test_multipleValidations() {
        MultiValidationBean bean = new MultiValidationBean();
        bean.setRequiredCron(null); // Violates NotNull

* `frozenset`:
    * В запросах и ответах обрабатывается так же, как и `set`:
        * В запросах будет прочитан список, исключены дубликаты и преобразован в `set`.
        * В ответах `set` будет преобразован в `list`.
        * В сгенерированной схеме будет указано, что значения `set` уникальны (с помощью JSON-схемы `uniqueItems`).
* `bytes`:
    * Встроенный в Python `bytes`.

// with governance bypass headers set in the request.
// Objects under site wide WORM can never be overwritten.
// For objects in "Governance" mode, overwrite is allowed if a) object retention date is past OR
// governance bypass headers are set and user has governance bypass permissions.
// Objects in "Compliance" mode can be overwritten only if retention date is past.

        byte[] buffer = new byte[100];
        int bufferIndex = 0;

        // Set bufDataStart to 0 initially
        Field bufDataStartField = response.getClass().getSuperclass().getSuperclass().getDeclaredField("bufDataStart");
        bufDataStartField.setAccessible(true);
        bufDataStartField.set(response, 0);

        // Prepare buffer with totalParameterCount = 1500
        buffer[bufferIndex] = 0x00;