In that case, you can simply swap the standard `dataclasses` with `pydantic.dataclasses`, which is a drop-in replacement:

{* ../../docs_src/dataclasses/tutorial003.py hl[1,5,8:11,14:17,23:25,28] *}

1. We still import `field` from standard `dataclasses`.

2. `pydantic.dataclasses` is a drop-in replacement for `dataclasses`.

3. The `Author` dataclass includes a list of `Item` dataclasses.

<img src="/img/tutorial/response-status-code/image02.png">

/// note | Technische Details

Sie können auch `from starlette import status` verwenden.

**FastAPI** bietet dieselben `starlette.status`-Codes auch via `fastapi.status` an, als Annehmlichkeit für Sie, den Entwickler. Sie kommen aber direkt von Starlette.

///

## Den Defaultwert ändern

// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"bytes"
	"context"
	"crypto/sha256"
	"encoding/hex"
	"io"
	"net/http"
	"net/http/httptest"
	"net/url"
	"strconv"
	"testing"
	"time"

	"github.com/minio/minio-go/v7/pkg/signer"

package cmd

// Code generated by github.com/tinylib/msgp DO NOT EDIT.

import (
	"bytes"
	"testing"

	"github.com/tinylib/msgp/msgp"
)

func TestMarshalUnmarshalDailyAllTierStats(t *testing.T) {
	v := DailyAllTierStats{}
	bts, err := v.MarshalMsg(nil)
	if err != nil {
		t.Fatal(err)
	}
	left, err := v.UnmarshalMsg(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {

/// note | Технічні деталі

Також можна використовувати `from starlette.middleware.cors import CORSMiddleware`.

**FastAPI** надає кілька middleware у `fastapi.middleware` для зручності розробників. Але більшість доступних middleware походять безпосередньо зі Starlette.

// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"math/rand"
	"runtime"
	"sync"
	"testing"
	"time"
)

func TestDynamicTimeoutSingleIncrease(t *testing.T) {
	timeout := newDynamicTimeout(time.Minute, time.Second)

	initial := timeout.Timeout()

package schema

import (
	"strings"
	"testing"
)

func TestToDBName(t *testing.T) {
	maps := map[string]string{
		"":                          "",
		"x":                         "x",
		"X":                         "x",
		"userRestrictions":          "user_restrictions",
		"ThisIsATest":               "this_is_a_test",
		"PFAndESI":                  "pf_and_esi",
		"AbcAndJkl":                 "abc_and_jkl",

package schema

import (
	"context"
	"fmt"
	"reflect"
	"regexp"
	"strings"

	"gorm.io/gorm/clause"
	"gorm.io/gorm/utils"
)

var embeddedCacheKey = "embedded_cache_store"

func ParseTagSetting(str string, sep string) map[string]string {
	settings := map[string]string{}
	names := strings.Split(str, sep)

	for i := 0; i < len(names); i++ {
		j := i
		if len(names[j]) > 0 {
			for {

package tests_test

import (
	"context"
	"database/sql"
	"os"
	"reflect"
	"testing"

	"gorm.io/driver/mysql"
	"gorm.io/gorm"
	. "gorm.io/gorm/utils/tests"
)

type wrapperTx struct {
	*sql.Tx
	conn *wrapperConnPool
}

func (c *wrapperTx) PrepareContext(ctx context.Context, query string) (*sql.Stmt, error) {
	c.conn.got = append(c.conn.got, query)
	return c.Tx.PrepareContext(ctx, query)
}

// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"bytes"
	"encoding/json"
	"io"
	"net/http"

	humanize "github.com/dustin/go-humanize"
	"github.com/minio/madmin-go/v3"
	"github.com/minio/minio/internal/logger"
	"github.com/minio/mux"