}

  public void testOnlyOneOpen() throws Exception {
    ByteSource source = newByteSource(0, 50);
    int[] counter = new int[1];
    ByteSource checker =
        new ByteSource() {
          @Override
          public InputStream openStream() throws IOException {
            if (counter[0]++ != 0) {
              throw new IllegalStateException("More than one source open");
            }

                            <div class="card-footer">
                                <jsp:include page="/WEB-INF/view/common/admin/crud/buttons.jsp"></jsp:include>
                            </div>
                        </div>
                    </div>
                </div>
            </la:form>
        </section>
    </main>
    <jsp:include page="/WEB-INF/view/common/admin/footer.jsp"></jsp:include>
</div>

                                            key="labels.elevate_word_file"/></label>
                                </div>
                            </div>
                            <div class="card-footer">
                                <button type="submit" class="btn btn-primary" name="download"
                                        value="<la:message key="labels.elevate_word_button_download" />">

    private static final Logger logger = LogManager.getLogger(RelatedQueryHelper.class);

    /**
     * Map storing related queries organized by virtual host key and search term.
     * The outer map key is the virtual host key, the inner map key is the search term
     * (in lowercase), and the value is an array of related query strings.
     */

                                    </tr>
                                    </tbody>
                                </table>
                            </div>
                            <div class="card-footer">
                                <jsp:include page="/WEB-INF/view/common/admin/crud/buttons.jsp"></jsp:include>
                                <c:if test="${editable}"><la:link styleClass="btn btn-success"

                                    </tr>
                                    </tbody>
                                </table>
                            </div>
                            <div class="card-footer">
                                <jsp:include page="/WEB-INF/view/common/admin/crud/buttons.jsp"></jsp:include>
                                <c:if test="${fe:permission('admin-scheduler')}">

            Exception innermost = new IOException("Innermost exception");
            Exception middle = new RuntimeException("Middle exception", innermost);
            Exception rootCause = new IllegalStateException("Outer exception", middle);
            TransportException exception = new TransportException("Transport failed", rootCause);

            String result = exception.toString();

            assertNotNull(result);

        }

        // Then - Check that counter portion has entropy
        // For SMB3-compliant nonces, the first 8 bytes are a counter (little-endian)
        // so we check that the counter bytes change as expected
        Set<String> uniqueCounters = new HashSet<>();
        for (int i = 0; i < sampleSize; i++) {
            // Extract first 8 bytes as counter
            byte[] counter = new byte[8];

		t.Helper()
		if err != nil {
			t.Fatal(err)
		}
	}

	// Add a version with tiered content, one with local content
	xl := xlMetaV2{}
	counter := 1
	report := func() {
		t.Helper()
		// t.Logf("versions (%d): len = %d", counter, len(xl.versions))
		counter++
	}
	fi := FileInfo{
		Volume:           "volume",
		Name:             "object-name",
		VersionID:        "00000000-0000-0000-0000-000000000001",

L'opération d'écriture n'utilisant ni `async` ni `await`, on définit la fonction avec un `def` normal.

{* ../../docs_src/background_tasks/tutorial001.py hl[6:9] *}

## Ajouter une tâche d'arrière-plan

Dans votre *fonction de chemin*, passez votre fonction de tâche à l'objet de type `BackgroundTasks` (`background_tasks` ici) grâce à la méthode `.add_task()` :