**Codice Sorgente**: <a href="https://github.com/fastapi/fastapi" target="_blank">https://github.com/fastapi/fastapi</a>

---

FastAPI è un web framework moderno e veloce (a prestazioni elevate) che serve a creare API con Python 3.6+ basato sulle annotazioni di tipo di Python.

Le sue caratteristiche principali sono:

/// tip | Порада

Щоб дізнатися більше про кожен код статусу і призначення кожного з них, перегляньте документацію <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Status" class="external-link" target="_blank"><abbr title="Mozilla Developer Network">MDN</abbr> про HTTP коди статусу</a>.

///

## Легкий спосіб запам'ятати назви

Розглянемо ще раз попередній приклад:

	"github.com/minio/minio/internal/auth"
	xjwt "github.com/minio/minio/internal/jwt"
	"github.com/minio/pkg/v3/policy"
)

const (
	jwtAlgorithm = "Bearer"

	// Default JWT token for web handlers is one day.
	defaultJWTExpiry = 24 * time.Hour

	// Inter-node JWT token expiry is 100 years approx.
	defaultInterNodeJWTExpiry = 100 * 365 * 24 * time.Hour
)

var (

  </component>
  <component name="ExternalStorageConfigurationManager" enabled="true" />
  <component name="FrameworkDetectionExcludesConfiguration">
    <type id="web" />
  </component>
  <component name="NullableNotNullManager">
    <option name="myDefaultNullable" value="javax.annotation.Nullable" />
    <option name="myDefaultNotNull" value="javax.annotation.Nonnull" />

   */
  public static final MediaType XML_UTF_8 = createConstantUtf8(TEXT_TYPE, "xml");

  /**
   * As described in <a href="https://w3c.github.io/webvtt/#iana-text-vtt">the VTT spec</a>, this is
   * used for Web Video Text Tracks (WebVTT) files, used with the HTML5 track element.
   *
   * @since 20.0
   */
  public static final MediaType VTT_UTF_8 = createConstantUtf8(TEXT_TYPE, "vtt");

  /* image types */
  /**

        if (StringUtil.isNotBlank(scriptType)) {
            return scriptType;
        }
        return Constants.DEFAULT_SCRIPT;
    }

    public enum ConfigType {
        WEB("W"), FILE("F"), DATA("D");

        private final String typePrefix;

        ConfigType(final String typePrefix) {
            this.typePrefix = typePrefix;
        }

        public String getTypePrefix() {

            try {
                webConfig = webConfigService.getWebConfig(getWebConfigId()).get();
            } catch (final Exception e) {
                logger.warn("Web Config {} does not exist.", getWebConfigId(), e);
            }
        }
        return webConfig;
    }

    public String getId() {
        return asDocMeta().id();
    }

	claims.SetExpiry(UTCNow().Add(defaultJWTExpiry))
	claims.SetAccessKey(accessKey)
	token := jwtgo.NewWithClaims(jwtgo.SigningMethodHS512, claims)
	return token.SignedString([]byte(secretKey))
}

// Tests web request authenticator.
func TestWebRequestAuthenticate(t *testing.T) {
	ctx, cancel := context.WithCancel(t.Context())
	defer cancel()

	obj, fsDir, err := prepareFS(ctx)
	if err != nil {
		t.Fatal(err)
	}

{* ../../docs_src/middleware/tutorial001.py hl[8:9,11,14] *}

/// tip

Keep in mind that custom proprietary headers can be added <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers" class="external-link" target="_blank">using the 'X-' prefix</a>.

Keep in mind that dataclasses can't do everything Pydantic models can do.

So, you might still need to use Pydantic models.

But if you have a bunch of dataclasses laying around, this is a nice trick to use them to power a web API using FastAPI. 🤓

///

## Dataclasses in `response_model` { #dataclasses-in-response-model }

You can also use `dataclasses` in the `response_model` parameter: