```Python
some_variable: PlaneItem | CarItem
```

But if we put that in `response_model=PlaneItem | CarItem` we would get an error, because Python would try to perform an **invalid operation** between `PlaneItem` and `CarItem` instead of interpreting that as a type annotation.

## List of models

The same way, you can declare responses of lists of objects.

Se estivesse em uma anotação de tipo, poderíamos ter usado a barra vertical, como:

```Python
some_variable: PlaneItem | CarItem
```

👉 🖼 👥 🚶‍♀️ `Union[PlaneItem, CarItem]` 💲 ❌ `response_model`.

↩️ 👥 🚶‍♀️ ⚫️ **💲 ❌** ↩️ 🚮 ⚫️ **🆎 ✍**, 👥 ✔️ ⚙️ `Union` 🐍 3️⃣.1️⃣0️⃣.

🚥 ⚫️ 🆎 ✍ 👥 💪 ✔️ ⚙️ ⏸ ⏸,:

```Python
some_variable: PlaneItem | CarItem
```

✋️ 🚥 👥 🚮 👈 `response_model=PlaneItem | CarItem` 👥 🔜 🤚 ❌, ↩️ 🐍 🔜 🔄 🎭 **❌ 🛠️** 🖖 `PlaneItem` & `CarItem` ↩️ 🔬 👈 🆎 ✍.

## 📇 🏷

🎏 🌌, 👆 💪 📣 📨 📇 🎚.

Wenn es eine Typannotation gewesen wäre, hätten wir auch den vertikalen Trennstrich verwenden können, wie in:

```Python
some_variable: PlaneItem | CarItem
```