### German instructions about difficult to translate technical terms (written in first person, which is you)

我們也可以加上一個 `tags` 清單，以及會套用在此 router 內所有路徑操作上的額外 `responses`。

我們還可以加上一個 `dependencies` 清單，這些相依性會加入此 router 內所有的路徑操作，並在對它們的每個請求上執行 / 解決。

/// tip | 提示

請注意，就像在[路徑操作裝飾器中的相依性](dependencies/dependencies-in-path-operation-decorators.md)一樣，不會把任何值傳遞給你的路徑操作函式（path operation function）。

///

最後的結果是這些 item 的路徑如下：

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

...正如我們預期的。

* 它們會被標記為只有一個字串 `"items"` 的標籤清單。

```console
$ <font color="#4E9A06">fastapi</font> run <u style="text-decoration-style:solid">main.py</u>
<span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting server
        Searching for package file structure
```

Result (German):

```console
$ <font color="#4E9A06">fastapi</font> run <u style="text-decoration-style:solid">main.py</u>

```Python
def get_settings():
    return Settings()
```

würden wir dieses Objekt für jeden Request erstellen und die `.env`-Datei für jeden Request lesen. ⚠️

Da wir jedoch den `@lru_cache`-Dekorator oben verwenden, wird das `Settings`-Objekt nur einmal erstellt, nämlich beim ersten Aufruf. ✔️

{* ../../docs_src/settings/app03_an_py310/main.py hl[1,11] *}

E pronto.

**2 linhas**.

E com a mesma forma e estrutura de todas as suas *funções de operação de rota*.

Você pode pensar nela como uma *função de operação de rota* sem o "decorador" (sem a linha `@app.get("/some-path")`).

E com qualquer retorno que você desejar.

Neste caso, a dependência espera por:

* Um parâmetro de consulta opcional `q` do tipo `str`.

compilation to JavaScript, it cannot rely on the types to define validation, serialization and documentation at the same time. Due to this and some design decisions, to get validation, serialization and automatic schema generation, it's needed to add decorators in many places. So, it becomes quite verbose.

It can't handle nested models very well. So, if the JSON body in the request is a JSON object that has inner fields that in turn are nested JSON objects, it cannot be properly documented and...

And the part after the `yield` will be executed **after** the application has finished.

### Async Context Manager { #async-context-manager }

If you check, the function is decorated with an `@asynccontextmanager`.

That converts the function into something called an "**async context manager**".

{* ../../docs_src/events/tutorial003_py310.py hl[1,13] *}

Das war's schon.

**Zwei Zeilen**.

Und sie hat die gleiche Form und Struktur wie alle Ihre *Pfadoperation-Funktionen*.

Sie können sie sich als *Pfadoperation-Funktion* ohne den „Dekorator“ (ohne `@app.get("/some-path")`) vorstellen.

Und sie kann alles zurückgeben, was Sie möchten.

In diesem Fall erwartet diese Abhängigkeit:

* Einen optionalen Query-Parameter `q`, der ein `str` ist.

```Python
def get_settings():
    return Settings()
```

crearíamos ese objeto para cada request, y estaríamos leyendo el archivo `.env` para cada request. ⚠️

Pero como estamos usando el decorador `@lru_cache` encima, el objeto `Settings` se creará solo una vez, la primera vez que se llame. ✔️

{* ../../docs_src/settings/app03_an_py310/main.py hl[1,11] *}

Пример кода Bash...

```bash
# Вывести приветствие вселенной
echo "Hello universe"
```

...и пример вывода в консоли...

```console
$ <font color="#4E9A06">fastapi</font> run <u style="text-decoration-style:solid">main.py</u>
<span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting server
        Searching for package file structure
```

...и ещё один пример вывода в консоли...