### Return a Response Directly

The most common case would be [returning a Response directly as explained later in the advanced docs](../advanced/response-directly.md){.internal-link target=_blank}.

```Python hl_lines="8  10-11"
{!> ../../docs_src/response_model/tutorial003_02.py!}
```

This simple case is handled automatically by FastAPI because the return type annotation is the class (or a subclass of) `Response`.

Der häufigste Anwendungsfall ist, wenn Sie [eine Response direkt zurückgeben, wie es später im Handbuch für fortgeschrittene Benutzer erläutert wird](../advanced/response-directly.md){.internal-link target=_blank}.

```Python hl_lines="8  10-11"
{!> ../../docs_src/response_model/tutorial003_02.py!}
```

Dieser einfache Anwendungsfall wird automatisch von FastAPI gehandhabt, weil die Annotation des Rückgabetyps die Klasse (oder eine Unterklasse von) `Response` ist.

```Python hl_lines="5" title="app/main.py"
{!../../docs_src/bigger_applications/app/main.py!}
```

### 🔌 `APIRouter`Ⓜ `users` & `items`

🔜, ➡️ 🔌 `router`Ⓜ ⚪️➡️ 🔁 `users` & `items`:

```Python hl_lines="10-11" title="app/main.py"
{!../../docs_src/bigger_applications/app/main.py!}
```

/// info

`users.router` 🔌 `APIRouter` 🔘 📁 `app/routers/users.py`.

    X997,
    X998,
    X999,
    X1000,
    X1001,
    X1002,
    X1003,
    X1004,
    X1005,
    X1006,
    X1007,
    X1008,
    X1009,
    X1010,
    X1011,
    X1012,
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    X1017,
    X1018,
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    X1020,
    X1021,
    X1022,
    X1023,
    X1024,
    X1025,

{!../../docs_src/bigger_applications/app/main.py!}
```

### Include the `APIRouter`s for `users` and `items`

Now, let's include the `router`s from the submodules `users` and `items`:

```Python hl_lines="10-11" title="app/main.py"
{!../../docs_src/bigger_applications/app/main.py!}
```

/// info

`users.router` contains the `APIRouter` inside of the file `app/routers/users.py`.

    X997,
    X998,
    X999,
    X1000,
    X1001,
    X1002,
    X1003,
    X1004,
    X1005,
    X1006,
    X1007,
    X1008,
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    X1025,

                }
            }
        }

        @Override
        public int compareTo(Item item) {
            if (item == null) {
                if (size() == 0) {
                    return 0; // 1-0 = 1- (normalize) = 1
                }
                // Compare the entire list of items with null - not just the first one, MNG-6964
                for (Item i : this) {
                    int result = i.compareTo(null);

  }

  public void testMergeSorted_pyramid() {
    List<Iterable<Integer>> iterables = Lists.newLinkedList();
    List<Integer> allIntegers = Lists.newArrayList();

    // Creates iterators like: {{}, {0}, {0, 1}, {0, 1, 2}, ...}
    for (int i = 0; i < 10; i++) {
      List<Integer> list = Lists.newLinkedList();
      for (int j = 0; j < i; j++) {
        list.add(j);
        allIntegers.add(j);
      }

{!../../docs_src/bigger_applications/app/main.py!}
```

### Incluir o `APIRouter`s para `usuários` e `itens`

Agora, vamos incluir os `roteadores` dos submódulos `usuários` e `itens`:

```Python hl_lines="10-11" title="app/main.py"
{!../../docs_src/bigger_applications/app/main.py!}
```

/// info | "Informação"

`users.router` contém o `APIRouter` dentro do arquivo `app/routers/users.py`.

	MOVD R3, 391(R17)                          // 3b1e0691630300f9
	MOVD R3, 4095(R17)                         // 3bfe3f91630300f9

// large aligned offset, use two instructions(add+ldr/str).
	MOVB	R1, 0x1001(R2) 		// MOVB		R1, 4097(R2)		// 5b04409161070039
	MOVB	R1, 0xffffff(R2)	// MOVB		R1, 16777215(R2)	// 5bfc7f9161ff3f39
	MOVH	R1, 0x2002(R2)		// MOVH		R1, 8194(R2)		// 5b08409161070079