<img src="/img/python-types/image06.png">

Notice that this means "`one_person` is an **instance** of the class `Person`".

It doesn't mean "`one_person` is the **class** called `Person`".

## Pydantic models { #pydantic-models }

<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> is a Python library to perform data validation.

You declare the "shape" of the data as classes with attributes.

![ReDoc](https://fastapi.tiangolo.com/img/index/index-06-redoc-02.png)

### Just Modern Python { #just-modern-python }

It's all based on standard **Python type** declarations (thanks to Pydantic). No new syntax to learn. Just standard modern Python.

/**
 * A test which demonstrates maven's recursive inheritance where
 * a distinct value is taken from each parent contributing to
 * the final model of the project being assembled. There is no
 * overriding going on amongst the models being used in this test:
 * each model in the lineage is providing a value that is not present
 * anywhere else in the lineage. We are just making sure that values

///

/// note

👀 👈 🔢 🏷 ✔.

, 🚥 👆 💚 📨 🍕 ℹ 👈 💪 🚫 🌐 🔢, 👆 💪 ✔️ 🏷 ⏮️ 🌐 🔢 ™ 📦 (⏮️ 🔢 💲 ⚖️ `None`).

🔬 ⚪️➡️ 🏷 ⏮️ 🌐 📦 💲 **ℹ** & 🏷 ⏮️ ✔ 💲 **🏗**, 👆 💪 ⚙️ 💭 🔬 [➕ 🏷](extra-models.md){.internal-link target=_blank}.

    disabled = user_dict["disabled"],
    hashed_password = user_dict["hashed_password"],
)
```

/// info

Eine ausführlichere Erklärung von `**user_dict` finden Sie in [der Dokumentation für **Extra Modelle**](../extra-models.md#uber-user_indict){.internal-link target=_blank}.

///

## Den Token zurückgeben

Die Response des `token`-Endpunkts muss ein JSON-Objekt sein.

Чтобы отличить модели со всеми необязательными значениями для **обновления** от моделей с обязательными значениями для **создания**, можно воспользоваться идеями, описанными в [Дополнительные модели](extra-models.md){.internal-link target=_blank}.

    full_name = user_dict["full_name"],
    disabled = user_dict["disabled"],
    hashed_password = user_dict["hashed_password"],
)
```

/// info

🌅 🏁 🔑 `**👩‍💻_ #️⃣ ` ✅ 🔙 [🧾 **➕ 🏷**](../extra-models.md#user_indict){.internal-link target=_blank}.

///

## 📨 🤝

📨 `token` 🔗 🔜 🎻 🎚.

⚫️ 🔜 ✔️ `token_type`. 👆 💼, 👥 ⚙️ "📨" 🤝, 🤝 🆎 🔜 "`bearer`".

# Return a Response Directly { #return-a-response-directly }

When you create a **FastAPI** *path operation* you can normally return any data from it: a `dict`, a `list`, a Pydantic model, a database model, etc.

By default, **FastAPI** would automatically convert that return value to JSON using the `jsonable_encoder` explained in [JSON Compatible Encoder](../tutorial/encoder.md){.internal-link target=_blank}.

{* ../../docs_src/first_steps/tutorial001.py hl[8] *}

You can return a `dict`, `list`, singular values as `str`, `int`, etc.

You can also return Pydantic models (you'll see more about that later).

There are many other objects and models that will be automatically converted to JSON (including ORMs, etc). Try using your favorite ones, it's highly probable that they are already supported.

## Recap { #recap }

Щоб розрізняти моделі з усіма необов’язковими значеннями для **оновлення** і моделі з обов’язковими значеннями для **створення**, Ви можете скористатись ідеями, описаними у [Додаткові моделі](extra-models.md){.internal-link target=_blank}.