"in": "path",
                        },
                        {
                            "required": False,
                            "schema": {
                                "anyOf": [
                                    {
                                        "type": "string",
                                    },
                                    {

    client = TestClient(mod.app)
    return client


def test_create_item(client: TestClient) -> None:
    response = client.post("/items/", json={"name": "Foo"})
    assert response.status_code == 200, response.text
    assert response.json() == {"name": "Foo", "description": None}


def test_read_items(client: TestClient) -> None:
    response = client.get("/items/")
    assert response.status_code == 200, response.text

async def read_optional_list_bytes(p: Annotated[Optional[list[bytes]], File()] = None):
    return {"file_size": [len(file) for file in p] if p else None}


@app.post("/optional-list-uploadfile")
async def read_optional_list_uploadfile(
    p: Annotated[Optional[list[UploadFile]], File()] = None,
):
    return {"file_size": [file.size for file in p] if p else None}


@pytest.mark.parametrize(
    "path",
    [

## `Union` oder `anyOf` { #union-or-anyof }

Sie können deklarieren, dass eine <abbr title="Response – Antwort: Daten, die der Server zum anfragenden Client zurücksendet">Response</abbr> eine <abbr title="Union – Verbund, Einheit, Vereinigung: Eines von Mehreren">`Union`</abbr> mehrerer Typen ist, das bedeutet, dass die Response einer von ihnen ist.

Dies wird in OpenAPI mit `anyOf` definiert.

{* ../../docs_src/extra_models/tutorial002_py310.py hl[7,13:14,17:18,21:22] *}

## `Union` или `anyOf` { #union-or-anyof }

Вы можете определить ответ как `Union` из двух или более типов. Это означает, что ответ должен соответствовать одному из них.

Он будет определён в OpenAPI как `anyOf`.

                            {
                                "required": False,
                                "schema": {
                                    "title": "Callback Url",
                                    "anyOf": [
                                        {
                                            "type": "string",
                                            "format": "uri",

                            "in": "path",
                        },
                        {
                            "required": False,
                            "schema": {
                                "anyOf": [{"type": "boolean"}, {"type": "null"}],
                                "title": "Img",
                            },
                            "name": "img",
                            "in": "query",

                                "format": "date-time",
                            },
                            "repeat_at": {
                                "title": "Repeat At",
                                "anyOf": [
                                    {"type": "string", "format": "time"},
                                    {"type": "null"},
                                ],
                            },

                            "in": "query",
                        },
                        {
                            "required": False,
                            "schema": {
                                "anyOf": [{"type": "integer"}, {"type": "null"}],
                                "title": "Limit",
                            },
                            "name": "limit",
                            "in": "query",

                    "parameters": [
                        {
                            "required": False,
                            "schema": {
                                "anyOf": [
                                    {
                                        "type": "string",
                                        "maxLength": 50,
                                    },