次のようなJSONが表示されます。

```JSON
{
    "openapi": "3.0.2",
    "info": {
        "title": "FastAPI",
        "version": "0.1.0"
    },
    "paths": {
        "/items/": {
            "get": {
                "responses": {
                    "200": {
                        "description": "Successful Response",
                        "content": {

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:single">main.py</u>
<font color="#3465A4">INFO    </font> Using path <font color="#3465A4">main.py</font>
<font color="#3465A4">INFO    </font> Resolved absolute path <font color="#75507B">/home/user/code/awesomeapp/</font><font color="#AD7FA8">main.py</font>

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.repository.internal;

import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Objects;

def test_router_with_params():
    client = TestClient(app)
    with client.websocket_connect(
        "/router/path/to/file?queryparam=a_query_param"
    ) as websocket:
        data = websocket.receive_text()
        assert data == "path/to/file"
        data = websocket.receive_text()
        assert data == "a_query_param"


def test_wrong_uri():
    """

	outReq.URL = copyURL(outReq.URL)
	outReq.URL.Scheme = target.Scheme
	outReq.URL.Host = target.Host

	u := f.getURLFromRequest(outReq)

	outReq.URL.Path = u.Path
	outReq.URL.RawPath = u.RawPath
	outReq.URL.RawQuery = u.RawQuery
	outReq.RequestURI = "" // Outgoing request should not have RequestURI

	// Do not pass client Host header unless requested.
	if !f.PassHost {

{
  "cniVersion": "0.3.1",
  "name": "istio-cni",
  "type": "istio-cni",
  "plugin_log_level": "__LOG_LEVEL__",
  "kubernetes": {
      "kubeconfig": "__KUBECONFIG_FILENAME__",
      "cni_bin_dir": "/path/cni/bin"
  }

    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/model-with-tuple/": {
                "post": {
                    "summary": "Post Model With Tuple",
                    "operationId": "post_model_with_tuple_model_with_tuple__post",

    """

    def __init__(
        self,
        tokenUrl: Annotated[
            str,
            Doc(
                """
                The URL to obtain the OAuth2 token. This would be the *path operation*
                that has `OAuth2PasswordRequestForm` as a dependency.
                """
            ),
        ],
        scheme_name: Annotated[
            Optional[str],
            Doc(

# Devolver una respuesta directamente

Cuando creas una *operación de path* normalmente puedes devolver cualquier dato: un `dict`, una `list`, un modelo Pydantic, un modelo de base de datos, etc.

Por defecto, **FastAPI** convertiría automáticamente ese valor devuelto a JSON usando el `jsonable_encoder` explicado en [Codificador Compatible JSON](../tutorial/encoder.md){.internal-link target=_blank}.

                include "**/*.xml"
                include "*.xsl"
            }
            from(archives.zipTree(getDocbookStylesheets().singleFile)) {
                eachFile {
                    fcd -> fcd.path = fcd.path.replaceFirst("^docbook", "")
                }
            }
            into(getTemporaryDir())
        }

        def stylesheetFile = new File(getTemporaryDir(), "dslHtml.xsl")