```Python hl_lines="10-12"
{!../../docs_src/response_headers/tutorial001.py!}
```

/// note | Detalles Técnicos

También podrías utilizar `from starlette.responses import Response` o `from starlette.responses import JSONResponse`.

from typing import Set, Union

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: Union[str, None] = None
    price: float
    tax: Union[float, None] = None
    tags: Set[str] = set()


@app.post(
    "/items/",
    response_model=Item,
    summary="Create an item",
    response_description="The created item",
)

 */
package org.codelibs.fess.crawler.transformer;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.Map;

import org.apache.groovy.util.Maps;
import org.codelibs.fess.Constants;
import org.codelibs.fess.crawler.util.FieldConfigs;
import org.codelibs.fess.exception.FessSystemException;
import org.codelibs.fess.unit.UnitFessTestCase;

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package jcifs.netbios;


import java.io.IOException;
import java.io.InputStream;

import jcifs.Configuration;
import jcifs.NetbiosName;


/**
 *
 */
public class SessionRequestPacket extends SessionServicePacket {

    private Name calledName, callingName;

 * governing permissions and limitations under the License.
 */
package org.codelibs.core.xml;

import javax.xml.XMLConstants;
import javax.xml.validation.SchemaFactory;

import org.codelibs.core.log.Logger;
import org.xml.sax.SAXException;

/**
 * {@link SchemaFactory}のためのユーティリティ・クラスです。
 *
 * @author koichik
 */
public abstract class SchemaFactoryUtil {

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

import javax.inject.Named;
import javax.inject.Singleton;

import java.util.Properties;

import org.apache.maven.model.building.ModelBuildingRequest;

/**
 * Maven default implementation of the {@link ModelVersionProcessor} to support

import pytest
from dirty_equals import IsDict
from fastapi.testclient import TestClient

from docs_src.dependencies.tutorial004 import app

client = TestClient(app)


@pytest.mark.parametrize(
    "path,expected_status,expected_response",
    [
        (
            "/items",
            200,
            {
                "items": [
                    {"item_name": "Foo"},
                    {"item_name": "Bar"},

import pytest
from dirty_equals import IsDict
from fastapi.testclient import TestClient

from docs_src.dependencies.tutorial004_an import app

client = TestClient(app)


@pytest.mark.parametrize(
    "path,expected_status,expected_response",
    [
        (
            "/items",
            200,
            {
                "items": [
                    {"item_name": "Foo"},
                    {"item_name": "Bar"},

 * the License.
 */

package com.google.common.io;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import java.io.DataOutput;
import java.io.IOException;

/**
 * An extension of {@code DataOutput} for writing to in-memory byte arrays; its methods offer

import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.MapFeature;
import com.google.common.testing.EqualsTester;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.NoSuchElementException;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

/**