## Changelog since v1.4.3

### Other notable changes

* Update the GCI image to gci-dev-55-8872-18-0 ([#35243](https://github.com/kubernetes/kubernetes/pull/35243), [@maisem](https://github.com/maisem))
* Change merge key for VolumeMount to mountPath ([#35071](https://github.com/kubernetes/kubernetes/pull/35071), [@thockin](https://github.com/thockin))

from typing import Annotated

from fastapi import FastAPI, Path, Query

app = FastAPI()


@app.get("/items/{item_id}")
async def read_items(
    *,
    item_id: Annotated[int, Path(title="The ID of the item to get", ge=0, le=1000)],
    q: str,
    size: Annotated[float, Query(gt=0, lt=10.5)],
):
    results = {"item_id": item_id}
    if q:
        results.update({"q": q})
    if size:
        results.update({"size": size})

    return client


@needs_py39
def test_get_no_item(client: TestClient):
    response = client.get("/items/foo")
    assert response.status_code == 404, response.text
    assert response.json() == {"detail": "Item not found, there's only a plumbus here"}


@needs_py39
def test_get(client: TestClient):
    response = client.get("/items/plumbus")
    assert response.status_code == 200, response.text

```

////

## Alias parameters

Imagine that you want the parameter to be `item-query`.

Like in:

```
http://127.0.0.1:8000/items/?item-query=foobaritems
```

But `item-query` is not a valid Python variable name.

The closest would be `item_query`.

But you still need it to be exactly `item-query`...

from typing import Annotated, Union

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(
    q: Annotated[
        Union[str, None],
        Query(
            alias="item-query",
            title="Query string",
            description="Query string for the items to search in the database that have a good match",
            min_length=3,
            max_length=50,

client = TestClient(app)


def test_get_no_item():
    response = client.get("/items/foo")
    assert response.status_code == 404, response.text
    assert response.json() == {"detail": "Item not found"}


def test_owner_error():
    response = client.get("/items/plumbus")
    assert response.status_code == 400, response.text
    assert response.json() == {"detail": "Owner error: Rick"}

            "X-Token": "fake-super-secret-token",
            "X-Key": "fake-super-secret-key",
        },
    )
    assert response.status_code == 200, response.text
    assert response.json() == [{"item": "Portal Gun"}, {"item": "Plumbus"}]


@needs_py39
def test_get_valid_headers_users(client: TestClient):
    response = client.get(
        "/users/",
        headers={

            } else if ("list".equals(qName)) {
                if (fieldName != null && !dataMap.containsKey(fieldName)) {
                    dataMap.put(fieldName, new ArrayList<>());
                }
            } else if ("item".equals(qName)) {
                buffer.setLength(0);
            }
        }

        @Override
        public void characters(final char[] ch, final int offset, final int length) {

        from pydantic import BaseModel

        class Item(BaseModel):
            name: str
            description: str | None = None

        app = FastAPI()
        router = APIRouter()

        @router.put("/items/{item_id}")
        def replace_item(item_id: str, item: Item):
            return {"message": "Item replaced", "id": item_id}

        app.include_router(router)

```

/// note | "참고"

`response_model`은 "데코레이터" 메소드(`get`, `post`, 등)의 매개변수입니다. 모든 매개변수들과 본문(body)처럼 *경로 작동 함수*가 아닙니다.

///

Pydantic 모델 어트리뷰트를 선언한 것과 동일한 타입을 수신하므로 Pydantic 모델이 될 수 있지만, `List[Item]`과 같이 Pydantic 모델들의 `list`일 수도 있습니다.

FastAPI는 이 `response_model`를 사용하여:

* 출력 데이터를 타입 선언으로 변환.
* 데이터 검증.
* OpenAPI *경로 작동*의 응답에 JSON 스키마 추가.
* 자동 생성 문서 시스템에 사용.

하지만 가장 중요한 것은: