exclude_none=exclude_none,
            exclude_defaults=exclude_defaults,
            sqlalchemy_safe=sqlalchemy_safe,
        )
    if dataclasses.is_dataclass(obj):
        assert not isinstance(obj, type)
        obj_dict = dataclasses.asdict(obj)
        return jsonable_encoder(
            obj_dict,
            include=include,
            exclude=exclude,
            by_alias=by_alias,

import warnings
from collections import deque
from dataclasses import dataclass
from datetime import datetime, timezone
from decimal import Decimal
from enum import Enum
from math import isinf, isnan
from pathlib import PurePath, PurePosixPath, PureWindowsPath
from typing import Optional, TypedDict

import pytest
from fastapi._compat import Undefined
from fastapi.encoders import jsonable_encoder

import sys
import types
import typing
import warnings
from collections import deque
from collections.abc import Mapping, Sequence
from dataclasses import is_dataclass
from typing import (
    Annotated,
    Any,
    Union,
)

from fastapi.types import UnionType
from pydantic import BaseModel
from pydantic.version import VERSION as PYDANTIC_VERSION
from starlette.datastructures import UploadFile

import dataclasses
import inspect
import sys
from collections.abc import Coroutine, Mapping, Sequence
from contextlib import AsyncExitStack, contextmanager
from copy import copy, deepcopy
from dataclasses import dataclass
from typing import (
    Annotated,
    Any,
    Callable,
    ForwardRef,
    Optional,
    Union,
    cast,
)

import anyio
from fastapi import params
from fastapi._compat import (
    ModelField,

"docs_src/dependencies/tutorial008_py39.py" = ["F821"]
"docs_src/dependencies/tutorial009_py39.py" = ["F821"]
"docs_src/dependencies/tutorial010_py39.py" = ["F821"]
"docs_src/custom_response/tutorial007_py39.py" = ["B007"]
"docs_src/dataclasses/tutorial003_py39.py" = ["I001"]
"docs_src/path_operation_advanced_configuration/tutorial007_py39.py" = ["B904"]
"docs_src/path_operation_advanced_configuration/tutorial007_pv1_py39.py" = ["B904"]

import warnings
from collections.abc import Sequence
from dataclasses import dataclass
from enum import Enum
from typing import Annotated, Any, Callable, Optional, Union

from fastapi.exceptions import FastAPIDeprecationWarning
from fastapi.openapi.models import Example
from pydantic import AliasChoices, AliasPath
from pydantic.fields import FieldInfo
from typing_extensions import Literal, deprecated

from ._compat import (
    Undefined,
)

import re
import warnings
from collections.abc import Sequence
from copy import copy, deepcopy
from dataclasses import dataclass, is_dataclass
from enum import Enum
from functools import lru_cache
from typing import (
    Annotated,
    Any,
    Union,
    cast,
)

from fastapi._compat import shared
from fastapi.openapi.constants import REF_TEMPLATE
from fastapi.types import IncEx, ModelNameMap, UnionType

## 0.67.0

### Features

* ✨ Add support for `dataclasses` in request bodies and `response_model`. New documentation: [Advanced User Guide - Using Dataclasses](https://fastapi.tiangolo.com/advanced/dataclasses/). PR [#3577](https://github.com/tiangolo/fastapi/pull/3577) by [@tiangolo](https://github.com/tiangolo).

    params=[
        pytest.param("tutorial002_py39"),
        pytest.param("tutorial002_py310", marks=needs_py310),
    ],
)
def get_client(request: pytest.FixtureRequest):
    mod = importlib.import_module(f"docs_src.dataclasses_.{request.param}")

    client = TestClient(mod.app)
    client.headers.clear()
    return client


def test_get_item(client: TestClient):
    response = client.get("/items/next")

    params=[
        pytest.param("tutorial001_py39"),
        pytest.param("tutorial001_py310", marks=needs_py310),
    ],
)
def get_client(request: pytest.FixtureRequest):
    mod = importlib.import_module(f"docs_src.dataclasses_.{request.param}")

    client = TestClient(mod.app)
    client.headers.clear()
    return client


def test_post_item(client: TestClient):
    response = client.post("/items/", json={"name": "Foo", "price": 3})