///

That means: "the variable `items` is a `list`, and each of the items in this list is a `str`".

By doing that, your editor can provide support even while processing items from the list:

<img src="/img/python-types/image05.png">

Without types, that's almost impossible to achieve.

Notice that the variable `item` is one of the elements in the list `items`.

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

### Dockerfile { #dockerfile }

Agora, no mesmo diretório do projeto, crie um arquivo `Dockerfile` com:

```{ .dockerfile .annotate }

대괄호 안의 내부 타입은 "타입 매개변수(type paramters)"라고 합니다.

이번 예제에서는 `str`이 `List`에 들어간 타입 매개변수 입니다.

///

이는 "`items`은 `list`인데, 배열에 들어있는 아이템 각각은 `str`이다"라는 뜻입니다.

이렇게 함으로써, 에디터는 배열에 들어있는 아이템을 처리할때도 도움을 줄 수 있게 됩니다:

<img src="/img/python-types/image05.png">

타입이 없으면 이건 거의 불가능이나 다름 없습니다.

변수 `item`은 `items`의 개별 요소라는 사실을 알아두세요.

그리고 에디터는 계속 `str`라는 사실을 알고 도와줍니다.

#### `Tuple`과 `Set`

## Ein weiteres Modul mit `APIRouter` { #another-module-with-apirouter }

Nehmen wir an, Sie haben im Modul unter `app/routers/items.py` auch die Endpunkte, die für die Verarbeitung von Artikeln („Items“) aus Ihrer Anwendung vorgesehen sind.

Sie haben *Pfadoperationen* für:

* `/items/`
* `/items/{item_id}`

Es ist alles die gleiche Struktur wie bei `app/routers/users.py`.

## Ещё один модуль с `APIRouter` { #another-module-with-apirouter }

Давайте также предположим, что у вас есть *эндпоинты*, отвечающие за обработку "items", и они находятся в модуле `app/routers/items.py`.

У вас определены следующие *операции пути* (*эндпоинты*):

* `/items/`
* `/items/{item_id}`

Тут всё точно также, как и в ситуации с `app/routers/users.py`.

Но теперь мы хотим поступить немного умнее и слегка упростить код.

async def read_users_me(
    current_user: Annotated[User, Depends(get_current_active_user)],
):
    return current_user


@app.get("/users/me/items/")
async def read_own_items(
    current_user: Annotated[User, Depends(get_current_active_user)],
):

    current_user: Annotated[User, Depends(get_current_active_user)],
):
    return current_user


@app.get("/users/me/items/")
async def read_own_items(
    current_user: Annotated[User, Security(get_current_active_user, scopes=["items"])],
):
    return [{"item_id": "Foo", "owner": current_user.username}]


@app.get("/status/")

    current_user: Annotated[User, Depends(get_current_active_user)],
):
    return current_user


@app.get("/users/me/items/")
async def read_own_items(
    current_user: Annotated[User, Security(get_current_active_user, scopes=["items"])],
):
    return [{"item_id": "Foo", "owner": current_user.username}]


@app.get("/status/")

@app.get("/users/me/", response_model=User)
async def read_users_me(current_user: User = Depends(get_current_active_user)):
    return current_user


@app.get("/users/me/items/")
async def read_own_items(current_user: User = Depends(get_current_active_user)):

@app.get("/users/me/", response_model=User)
async def read_users_me(current_user: User = Depends(get_current_active_user)):
    return current_user


@app.get("/users/me/items/")
async def read_own_items(current_user: User = Depends(get_current_active_user)):