```Python hl_lines="2"
{!> ../../docs_src/body/tutorial001_py310.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="4"
{!> ../../docs_src/body/tutorial001.py!}
```

////

## 创建数据模型

把数据模型声明为继承 `BaseModel` 的类。

使用 Python 标准类型声明所有属性：

//// tab | Python 3.10+

```Python hl_lines="5-9"
{!> ../../docs_src/body/tutorial001_py310.py!}
```

////

//// tab | Python 3.8+

```

////

//// tab | Python 3.10+ non-Annotated

/// tip

Prefer to use the `Annotated` version if possible.

///

```Python hl_lines="1  2  11-15"
{!> ../../docs_src/extra_data_types/tutorial001_py310.py!}
```

////

//// tab | Python 3.8+ non-Annotated

/// tip

Prefer to use the `Annotated` version if possible.

///

```Python hl_lines="1  2  12-16"

///

```Python hl_lines="7-12  16"
{!> ../../docs_src/header_param_models/tutorial001_py310.py!}
```

////

//// tab | Python 3.9+ non-Annotated

/// tip | Dica

Utilize a versão com `Annotated` se possível.

///

```Python hl_lines="9-14  18"
{!> ../../docs_src/header_param_models/tutorial001_py39.py!}
```

////

//// tab | Python 3.8+ non-Annotated

/// tip | Dica

//// tab | Python 3.10+

```Python hl_lines="7"
{!> ../../docs_src/separate_openapi_schemas/tutorial001_py310.py[ln:1-7]!}

# Code unterhalb weggelassen 👇
```

<details>
<summary>👀 Vollständige Dateivorschau</summary>

```Python
{!> ../../docs_src/separate_openapi_schemas/tutorial001_py310.py!}
```

</details>

////

//// tab | Python 3.9+

```Python hl_lines="9"

```

////

//// tab | Python 3.10+ non-Annotated

/// tip | "İpucu"

Mümkün mertebe 'Annotated' sınıfını kullanmaya çalışın.

///

```Python hl_lines="1"
{!> ../../docs_src/cookie_params/tutorial001_py310.py!}
```

////

//// tab | Python 3.8+ non-Annotated

/// tip | "İpucu"

Mümkün mertebe 'Annotated' sınıfını kullanmaya çalışın.

///

```Python hl_lines="3"

```

////

//// tab | Python 3.10+ non-Annotated

/// tip

Prefer to use the `Annotated` version if possible.

///

```Python hl_lines="1"
{!> ../../docs_src/header_params/tutorial001_py310.py!}
```

////

//// tab | Python 3.8+ non-Annotated

/// tip

Prefer to use the `Annotated` version if possible.

///

```Python hl_lines="3"

```Python hl_lines="3"
{!> ../../docs_src/path_params_numeric_validations/tutorial001.py!}
```

////

//// tab | 🐍 3️⃣.1️⃣0️⃣ & 🔛

```Python hl_lines="1"
{!> ../../docs_src/path_params_numeric_validations/tutorial001_py310.py!}
```

////

## 📣 🗃

👆 💪 📣 🌐 🎏 🔢 `Query`.

🖼, 📣 `title` 🗃 💲 ➡ 🔢 `item_id` 👆 💪 🆎:

//// tab | 🐍 3️⃣.6️⃣ & 🔛

```Python hl_lines="10"

```

////

//// tab | Python 3.10+ non-Annotated

/// tip

尽可能选择使用 `Annotated` 的版本。

///

```Python hl_lines="1  2  11-15"
{!> ../../docs_src/extra_data_types/tutorial001_py310.py!}
```

////

//// tab | Python 3.8+ non-Annotated

/// tip

尽可能选择使用 `Annotated` 的版本。

///

```Python hl_lines="1  2  12-16"

Let's say you have a Pydantic model with default values, like this one:

{* ../../docs_src/separate_openapi_schemas/tutorial001_py310.py ln[1:7] hl[7] *}

### Model for Input

If you use this model as an input like here:

{* ../../docs_src/separate_openapi_schemas/tutorial001_py310.py ln[1:15] hl[14] *}

...then the `description` field will **not be required**. Because it has a default value of `None`.

//// tab | 🐍 3️⃣.6️⃣ & 🔛

```Python hl_lines="4"
{!> ../../docs_src/body/tutorial001.py!}
```

////

//// tab | 🐍 3️⃣.1️⃣0️⃣ & 🔛

```Python hl_lines="2"
{!> ../../docs_src/body/tutorial001_py310.py!}
```

////

## ✍ 👆 💽 🏷

⤴️ 👆 📣 👆 💽 🏷 🎓 👈 😖 ⚪️➡️ `BaseModel`.

⚙️ 🐩 🐍 🆎 🌐 🔢:

//// tab | 🐍 3️⃣.6️⃣ & 🔛

```Python hl_lines="7-11"