You can define files to be uploaded by the client using `File`.

/// info

To receive uploaded files, first install [`python-multipart`](https://github.com/Kludex/python-multipart).

Make sure you create a [virtual environment](../virtual-environments.md), activate it, and then install it, for example:

```console
$ pip install python-multipart
```

This is because uploaded files are sent as "form data".

///

///

### Создайте `APIRouter` для обратного вызова { #create-a-callback-apirouter }

Сначала создайте новый `APIRouter`, который будет содержать один или несколько обратных вызовов.

{* ../../docs_src/openapi_callbacks/tutorial001_py310.py hl[1,23] *}

### Создайте *операцию пути* для обратного вызова { #create-the-callback-path-operation }

///

### Schritt 2: Erzeugen einer `FastAPI`-„Instanz“ { #step-2-create-a-fastapi-instance }

{* ../../docs_src/first_steps/tutorial001_py310.py hl[3] *}

In diesem Beispiel ist die Variable `app` eine „Instanz“ der Klasse `FastAPI`.

Dies wird der Hauptinteraktionspunkt für die Erstellung all Ihrer APIs sein.

### Schritt 3: Erstellen einer *Pfadoperation* { #step-3-create-a-path-operation }

#### Pfad { #path }

          }
        },
        "creation_date" : "1509021056135",
        "number_of_shards" : "5",
        "number_of_replicas" : "1",
        "uuid" : "8lLdTVsGQCKFnbgLSkPaUA",
        "version" : {
          "created" : "6000051"
        },
        "provided_name" : "fess_config.related_query"
      }
    }
  }

			</la:option>
			<la:option value="filename.desc">
				<la:message key="labels.search_result_sort_filename_desc" />
			</la:option>
			<la:option value="created.asc">
				<la:message key="labels.search_result_sort_created_asc" />
			</la:option>
			<la:option value="created.desc">
				<la:message key="labels.search_result_sort_created_desc" />
			</la:option>
			<la:option value="content_length.asc">

			</la:option>
			<la:option value="filename.desc">
				<la:message key="labels.search_result_sort_filename_desc" />
			</la:option>
			<la:option value="created.asc">
				<la:message key="labels.search_result_sort_created_asc" />
			</la:option>
			<la:option value="created.desc">
				<la:message key="labels.search_result_sort_created_desc" />
			</la:option>
			<la:option value="content_length.asc">

# Karma output
/www/test_out

# precommit temporary directories created by ./hack/verify-generated-docs.sh and ./hack/lib/util.sh
/_tmp/
/doc_tmp/

# Test artifacts produced by Prow/kubetest2 jobs
/_artifacts/
/_rundir/

# Go dependencies installed on Jenkins
/_gopath/

# Config directories created by gcloud and gsutil on Jenkins
/.config/gcloud*/
/.gsutil/

# CoreOS stuff

     * The name of the method.
     */
    private final String methodName;

    /**
     * The classes of the method arguments.
     */
    private final Class<?>[] methodArgClasses;

    /**
     * Creates a {@link MethodNotFoundRuntimeException}.
     *
     * @param targetClass
     *            Target class
     * @param methodName
     *            Method name
     * @param methodArgs

        val libs = project.the<VersionCatalogsExtension>().named("libs")
        from(
            project.configurations.detachedConfiguration(
                project.dependencies.create(libs.findLibrary("kotlinCompilerEmbeddable").get().get())
            )
        )
    }

    @get:InputFile
    @get:PathSensitive(PathSensitivity.RELATIVE)
    abstract val versionFile: RegularFileProperty

  final OkHttpClient client = new OkHttpClient();

  String post(String url, String json) throws IOException {
    RequestBody body = RequestBody.create(json, JSON);
    Request request = new Request.Builder()
        .url(url)
        .post(body)
        .build();
    try (Response response = client.newCall(request).execute()) {
      return response.body().string();