//// tab | Python 3.9+

```Python hl_lines="1"
{!> ../../docs_src/python_types/tutorial008_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="1  4"
{!> ../../docs_src/python_types/tutorial008.py!}
```

////

Dit betekent:

* De variabele `prices` is een `dict`:

* Ontworpen op basis van deze standaarden, na zorgvuldig onderzoek. In plaats van achteraf deze laag er bovenop te bouwen.
* Dit maakt het ook mogelijk om automatisch **clientcode te genereren** in verschillende programmeertalen.

### Automatische documentatie

Interactieve API-documentatie en verkenning van webgebruikersinterfaces. Aangezien dit framework is gebaseerd op OpenAPI, zijn er meerdere documentatie opties mogelijk, waarvan er standaard 2 zijn inbegrepen.

///

### Étape 5 : retourner le contenu

```Python hl_lines="8"
{!../../docs_src/first_steps/tutorial001.py!}
```

Vous pouvez retourner un dictionnaire (`dict`), une liste (`list`), des valeurs seules comme des chaines de caractères (`str`) et des entiers (`int`), etc.

Vous pouvez aussi retourner des models **Pydantic** (qui seront détaillés plus tard).

.org/dist/maven/maven-3/3.9.9/source/apache-maven-3.9.9-src.zip https://archive.apache.org/dist/maven/maven-3/3.9.9/source/apache-maven-3.9.9-src.tar.gz Apache Maven 3.9.8 2024-06-17 3.9.8 https://archive.apache.org/dist/maven/maven-3/3.9.8/binaries/apache-maven-3.9.8-bin.zip https://archive.apache.org/dist/maven/maven-3/3.9.8/binaries/apache-maven-3.9.8-bin.tar.gz https://archive.apache.org/dist/maven/maven-3/3.9.8/source/apache-maven-3.9.8-src.zip https://archive.apache.org/dist/maven/maven-3/...

🖼 🔛 👥 🤚 `user_dict` ⚪️➡️ `user_in.dict()`, 👉 📟:

```Python
user_dict = user_in.dict()
UserInDB(**user_dict)
```

🔜 🌓:

```Python
UserInDB(**user_in.dict())
```

...↩️ `user_in.dict()` `dict`, & ⤴️ 👥 ⚒ 🐍 "🎁" ⚫️ 🚶‍♀️ ⚫️ `UserInDB` 🔠 ⏮️ `**`.

, 👥 🤚 Pydantic 🏷 ⚪️➡️ 💽 ➕1️⃣ Pydantic 🏷.

#### 🎁 `dict` & ➕ 🇨🇻

#### 用其它模型中的内容生成 Pydantic 模型

上例中 ，从 `user_in.dict()` 中得到了 `user_dict`，下面的代码：

```Python
user_dict = user_in.dict()
UserInDB(**user_dict)
```

等效于：

```Python
UserInDB(**user_in.dict())
```

……因为 `user_in.dict()` 是字典，在传递给 `UserInDB` 时，把 `**` 加在  `user_in.dict()` 前，可以让 Python 进行**解包**。

这样，就可以用其它 Pydantic 模型中的数据生成 Pydantic 模型。

#### 解包 `dict` 和更多关键字

So, if we create a Pydantic object `user_in` like:

```Python
user_in = UserIn(username="john", password="secret", email="******@****.***")
```

and then we call:

```Python
user_dict = user_in.dict()
```

we now have a `dict` with the data in the variable `user_dict` (it's a `dict` instead of a Pydantic model object).

And if we call:

```Python

                "although still supported. Use examples instead."
            ),
        ] = _Unset,
        openapi_examples: Optional[Dict[str, Example]] = None,
        deprecated: Union[deprecated, str, bool, None] = None,
        include_in_schema: bool = True,
        json_schema_extra: Union[Dict[str, Any], None] = None,
        **extra: Any,
    ):
        if example is not _Unset:
            warnings.warn(

    if license_info:
        info["license"] = license_info
    output: Dict[str, Any] = {"openapi": openapi_version, "info": info}
    if servers:
        output["servers"] = servers
    components: Dict[str, Dict[str, Any]] = {}
    paths: Dict[str, Dict[str, Any]] = {}
    webhook_paths: Dict[str, Dict[str, Any]] = {}
    operation_ids: Set[str] = set()

Pydantic-Modelle haben eine `.dict()`-Methode, die ein `dict` mit den Daten des Modells zurückgibt.

Wenn wir also ein Pydantic-Objekt `user_in` erstellen, etwa so:

```Python
user_in = UserIn(username="john", password="secret", email="******@****.***")
```

und wir rufen seine `.dict()`-Methode auf:

```Python
user_dict = user_in.dict()
```