For example, it was clear that ideally it should be based on standard Python type hints.

Also, the best approach was to use already existing standards.

So, before even starting to code **FastAPI**, I spent several months studying the specs for OpenAPI, JSON Schema, OAuth2, etc. Understanding their relationship, overlap, and differences.

 *
 * <p>The {@code Packaging} class is an immutable value object, ensuring that once a packaging type is defined, it cannot be changed.</p>
 *
 * <h2>Standard Packaging Types</h2>
 * <ul>
 *     <li>{@code jar}: Packages the project as a Java Archive (JAR) file.</li>
 *     <li>{@code war}: Packages the project as a Web Application Archive (WAR) file.</li>

{* ../../docs_src/dependencies/tutorial001_02_an_py310.py hl[12,16,21] *}

/// tip | Tipp

Das ist schlicht Standard-Python, es wird als „Typalias“ bezeichnet und ist eigentlich nicht **FastAPI**-spezifisch.

Da **FastAPI** jedoch auf Standard-Python, einschließlich `Annotated`, basiert, können Sie diesen Trick in Ihrem Code verwenden. 😎

///

{* ../../docs_src/sub_applications/tutorial001_py39.py hl[3, 6:8] *}

### Unteranwendung { #sub-application }

Erstellen Sie dann Ihre Unteranwendung und deren *Pfadoperationen*.

Diese Unteranwendung ist nur eine weitere Standard-FastAPI-Anwendung, aber diese wird „gemountet“:

{* ../../docs_src/sub_applications/tutorial001_py39.py hl[11, 14:16] *}

### Die Unteranwendung mounten { #mount-the-sub-application }

 * default} methods. Instead, it inherits their default implementations. When those implementations
 * invoke methods, they invoke methods on the {@code ForwardingSet}.
 *
 * <p>The {@code standard} methods are not guaranteed to be thread-safe, even when all of the
 * methods that they depend on are thread-safe.
 *
 * @author Kevin Bourrillion
 * @author Louis Wasserman
 * @since 2.0
 */
@GwtCompatible

}{
	{
		Header: http.Header{
			xhttp.AmzServerSideEncryptionCustomerKey:     []string{""},
			xhttp.AmzServerSideEncryptionCopyCustomerKey: []string{""},
		},
		ExpectedHeader: http.Header{},
	},
	{ // Standard SSE-C request headers
		Header: http.Header{
			xhttp.AmzServerSideEncryptionCustomerAlgorithm: []string{xhttp.AmzEncryptionAES},

         * <ul>
         *   <li>Directly at the specified path</li>
         *   <li>Within a directory at the specified path</li>
         *   <li>In standard Maven project locations relative to the specified path</li>
         * </ul>
         *
         * @param project the path to search for a POM file

                    return new ArrayList<>(Sets.newTreeSet(insertionOrder));
                  }
                })
            .named("ForwardingSortedSet[SafeTreeSet] with standard implementations")
            .withFeatures(
                CollectionSize.ANY,
                CollectionFeature.KNOWN_ORDER,
                CollectionFeature.GENERAL_PURPOSE)
            .createTestSuite());

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  }

  /**
   * Returns the <a
   * href="http://en.wikipedia.org/wiki/Standard_deviation#Corrected_sample_standard_deviation">
   * corrected sample standard deviation</a> of the values. If this dataset is a sample drawn from a
   * population, this is an estimator of the population standard deviation of the population which
   * is less biased than {@link #populationStandardDeviation()} (the unbiased estimator depends on