Wir importieren das Submodul `items` direkt, anstatt nur seine Variable `router` zu importieren.

Das liegt daran, dass wir im Submodul `users` auch eine weitere Variable namens `router` haben.

Wenn wir eine nach der anderen importiert hätten, etwa:

```Python
from .routers.items import router
from .routers.users import router
```

    private String failureBehavior = FAIL_FAST;

    private final ProjectSorter sorter;

    private Map<String, BuildSuccess> buildSuccessesByProject = new HashMap<>();

    public ReactorManager(List<MavenProject> projects) throws CycleDetectedException, DuplicateProjectException {
        this.sorter = new ProjectSorter(projects);
    }

@item_router.get("/{item_id}")
def get_item(item_id: str, user_id: Optional[str] = None):
    if user_id is None:
        return {"item_id": item_id}
    else:
        return {"item_id": item_id, "user_id": user_id}


app.include_router(user_router, prefix="/users")
app.include_router(item_router, prefix="/items")

app.include_router(item_router, prefix="/users/{user_id}/items")

from ..dependencies import get_token_header

router = APIRouter(
    prefix="/items",
    tags=["items"],
    dependencies=[Depends(get_token_header)],
    responses={404: {"description": "Not found"}},
)


fake_items_db = {"plumbus": {"name": "Plumbus"}, "gun": {"name": "Portal Gun"}}


@router.get("/")
async def read_items():
    return fake_items_db


@router.get("/{item_id}")
async def read_item(item_id: str):

    @sub_router.on_event("shutdown")
    def sub_router_shutdown() -> None:
        state.sub_router_shutdown = True

    router.include_router(sub_router)
    app.include_router(router)

    assert state.app_startup is False
    assert state.router_startup is False
    assert state.sub_router_startup is False
    assert state.app_shutdown is False
    assert state.router_shutdown is False
    assert state.sub_router_shutdown is False

import pytest
from fastapi import APIRouter, FastAPI
from fastapi.exceptions import FastAPIError
from fastapi.testclient import TestClient

app = FastAPI()

router = APIRouter()


@router.get("")
def get_empty():
    return ["OK"]


app.include_router(router, prefix="/prefix")


client = TestClient(app)


def test_use_empty():
    with client:
        response = client.get("/prefix")

    ok: bool


invoices_callback_router = APIRouter()


@invoices_callback_router.post(
    "{$callback_url}/invoices/{$request.body.id}", response_model=InvoiceEventReceived
)
def invoice_notification(body: InvoiceEvent):
    pass  # pragma: nocover


class Event(BaseModel):
    name: str
    total: float


events_callback_router = APIRouter()

	"istio.io/istio/cni/pkg/constants"
	"istio.io/istio/pkg/test/util/assert"
)

func TestServer(t *testing.T) {
	router := http.NewServeMux()
	installReady, watchReady := initRouter(router)

	assert.Equal(t, installReady.Load(), false)
	assert.Equal(t, watchReady.Load(), false)

	server := httptest.NewServer(router)
	defer server.Close()

	makeReq(t, server.URL, constants.LivenessEndpoint, http.StatusOK)

        color: #000000;
        background-color: #d0d0d0;
        border-top-color: #ffffff;
        border-bottom-color: #707070;
        border-right-color: #707070;
        border-left-color: #ffffff;
        border-style: solid solid;
        border-top-width: 1px;
        border-bottom-width: 2px;
        border-right-width: 2px;
        border-left-width: 1px;
    }
    a:visited {
        color: #333897;
    }

from fastapi import APIRouter

router = APIRouter()


@router.post("/")
async def update_admin():