```Python hl_lines="5  22"
{!> ../../docs_src/encoder/tutorial001.py!}
```

////

In diesem Beispiel wird das Pydantic-Modell in ein `dict`, und das `datetime`-Objekt in ein `str` konvertiert.

Das Resultat dieses Aufrufs ist etwas, das mit Pythons Standard-<a href="https://docs.python.org/3/library/json.html#json.dumps" class="external-link" target="_blank">`json.dumps()`</a> kodiert werden kann.

errors.not_found_on_file_system=Not Found: {0}
errors.could_not_open_on_system=Could not open {0}. <br/>Please check if the file is associated with an application.
errors.result_size_exceeded=No more results could be displayed.
errors.target_file_does_not_exist={0} file does not exist.
errors.failed_to_delete_file=Failed to delete {0} file.
errors.docid_not_found=Not found Doc ID:{0}

	@${FINDFILES} -name '*.md' -not -path './manifests/addons/dashboards/*' -print0 | ${XARGS} mdl --ignore-front-matter --style common/config/mdl.rb

lint-links:
	@${FINDFILES} -name '*.md' -print0 | ${XARGS} awesome_bot --skip-save-results --allow_ssl --allow-timeout --allow-dupe --allow-redirect --white-list ${MARKDOWN_LINT_ALLOWLIST}

lint-sass:
	@${FINDFILES} -name '*.scss' -print0 | ${XARGS} sass-lint -c common/config/sass-lint.yml --verbose

n.default.fn[qe]=Pe,Ke._jQueryInterface};var Xe="SidebarSearch",Ye="lte.sidebar-search",Ze=n.default.fn[Xe],et="sidebar-search-open",tt="fa-search",at="fa-times",nt="sidebar-search-results",it="list-group",ot='[data-widget="sidebar-search"]',lt=ot+" .form-control",st=ot+" .btn",rt=st+" i",dt=".sidebar-search-results",ft=".sidebar-search-results .list-group",ut={arrowSign:"->",minLength:3,maxResults:7,highlightName:!0,highlightPath:!1,highlightClass:"text-light",notFoundText:"No element found!"},ct=[],ht=function(){function...

  private static long fingerprint(byte[] bytes, int length) {
    return HASH_FN.hashBytes(bytes, 0, length).asLong();
  }

  /**
   * Tests that the Java port of Fingerprint2011 provides the same results on buffers up to 800
   * bytes long as the original implementation in C++. See http://cl/106539598
   */
  public void testMultipleLengths() {
    int iterations = 800;
    byte[] buf = new byte[iterations * 4];

	VersionIDMarker string `xml:"VersionIdMarker"`

	MaxKeys   int
	Delimiter string `xml:"Delimiter,omitempty"`
	// A flag that indicates whether or not ListObjects returned all of the results
	// that satisfied the search criteria.
	IsTruncated bool

	CommonPrefixes []CommonPrefix
	Versions       []ObjectVersion

	// Encoding type used to encode object keys in the response.

				}
				saveBackgroundHealInfo(ctx, objAPI, newHealInfo)
			}

			// Wait before starting next cycle and wait on startup.
			results := make(chan DataUsageInfo, 1)
			go storeDataUsageInBackend(ctx, objAPI, results)
			err := objAPI.NSScanner(ctx, results, uint32(cycleInfo.current), scanMode)
			scannerLogIf(ctx, err)
			res := map[string]string{"cycle": strconv.FormatUint(cycleInfo.current, 10)}
			if err != nil {

   * contains entries with duplicate keys (for example, if it is a {@code SortedMap} whose
   * comparator is not <i>consistent with equals</i>), the results of this method are undefined.
   *
   * <p><b>Note:</b> Despite what the method name suggests, if {@code map} is an {@code
   * ImmutableClassToInstanceMap}, no copy will actually be performed.
   *

    assertThat(listener.recordedEventTypes().filter { it == "ConnectFailed" }).hasSize(0)
  }

  @Test
  fun callIpv6WhenBothServersAreReachable() {
    // Flip DNS results to prefer IPv6.
    dnsResults =
      listOf(
        localhostIpv6,
        localhostIpv4,
      )
    serverIpv4.enqueue(
      MockResponse(body = "unexpected call to IPv4"),
    )

To add it to your *path operation*, declare it the same way you declared path and query parameters:

{* ../../docs_src/body/tutorial001_py310.py hl[16] *}

...and declare its type as the model you created, `Item`.

## Results

With just that Python type declaration, **FastAPI** will:

* Read the body of the request as JSON.
* Convert the corresponding types (if needed).
* Validate the data.