* Pydantic также позволяет представить его как "Кодировку разницы во времени ISO 8601", <a href="https://docs.pydantic.dev/latest/concepts/serialization/#json_encoders" class="external-link" target="_blank">см. документацию для получения дополнительной информации</a>.
* `frozenset`:
    * В запросах и ответах обрабатывается так же, как и `set`:

Semua blok-blok kode dapat disalin dan digunakan langsung (Mereka semua sebenarnya adalah file python yang sudah teruji).

Untuk menjalankan setiap contoh, salin kode ke file `main.py`, dan jalankan `uvicorn` dengan:

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)

Você pode utilizar **Modelos Pydantic** para declarar **campos de formulários** no FastAPI.

/// info | "Informação"

Para utilizar formulários, instale primeiramente o <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>.

Certifique-se de criar um [ambiente virtual](../virtual-environments.md){.internal-link target=_blank}, ativá-lo, e então instalar. Por exemplo:

```console

import org.testcontainers.containers.MockServerContainer
import org.testcontainers.junit.jupiter.Container
import org.testcontainers.junit.jupiter.Testcontainers

@Testcontainers
@Isolated
class BasicLoomTest {
  @JvmField
  @RegisterExtension
  val platform = PlatformRule()

  // Use mock server so we are strictly testing OkHttp client only in this test.
  // We should test MockWebServer later.
  @Container

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.unit.UnitFessTestCase;

public class HtmlTagBasedGeneratorTest extends UnitFessTestCase {
    private static final Logger logger = LogManager.getLogger(HtmlTagBasedGeneratorTest.class);

    public void test_saveImage() throws Exception {
        HtmlTagBasedGenerator generator = new HtmlTagBasedGenerator();

 *
 * @author George van den Driessche
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class ForwardingSortedMapImplementsMapTest extends SortedMapInterfaceTest<String, Integer> {

  private static class SimpleForwardingSortedMap<K, V> extends ForwardingSortedMap<K, V> {
    final SortedMap<K, V> delegate;

    SimpleForwardingSortedMap(SortedMap<K, V> delegate) {

import junit.framework.TestCase;
import junit.framework.TestSuite;

/**
 * Tests for SafeTreeMap.
 *
 * @author Louis Wasserman
 */
public class SafeTreeMapTest extends TestCase {
  public static Test suite() {
    TestSuite suite = new TestSuite();
    suite.addTestSuite(SafeTreeMapTest.class);
    suite.addTest(
        NavigableMapTestSuiteBuilder.using(
                new TestStringSortedMapGenerator() {
                  @Override

/**
 * This class provides a skeletal implementation of the {@link ListIterator} interface across a
 * fixed number of elements that may be retrieved by position. It does not support {@link #remove},
 * {@link #set}, or {@link #add}.
 *
 * @author Jared Levy
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
abstract class AbstractIndexedListIterator<E extends @Nullable Object>

import junit.framework.TestCase;
import junit.framework.TestSuite;

/**
 * Tests for SafeTreeMap.
 *
 * @author Louis Wasserman
 */
public class SafeTreeMapTest extends TestCase {
  public static Test suite() {
    TestSuite suite = new TestSuite();
    suite.addTestSuite(SafeTreeMapTest.class);
    suite.addTest(
        NavigableMapTestSuiteBuilder.using(
                new TestStringSortedMapGenerator() {
                  @Override

from typing import Annotated

from fastapi import FastAPI, Header
from pydantic import BaseModel

app = FastAPI()


class CommonHeaders(BaseModel):
    host: str
    save_data: bool
    if_modified_since: str | None = None
    traceparent: str | None = None
    x_tag: list[str] = []


@app.get("/items/")
async def read_items(headers: Annotated[CommonHeaders, Header()]):