///

## 多个模型

下面的代码展示了不同模型处理密码字段的方式，及使用位置的大致思路：

//// tab | Python 3.10+

```Python hl_lines="7  9  14  20  22  27-28  31-33  38-39"
{!> ../../docs_src/extra_models/tutorial001_py310.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="9  11  16  22  24  29-30  33-35  40-41"
{!> ../../docs_src/extra_models/tutorial001.py!}
```

👉 ⛓ 👈 🐍 3️⃣.1️⃣0️⃣, 👆 💪 ⚙️ `Something | None`:

//// tab | 🐍 3️⃣.6️⃣ & 🔛

```Python hl_lines="1  4"
{!> ../../docs_src/python_types/tutorial009.py!}
```

////

//// tab | 🐍 3️⃣.6️⃣ & 🔛 - 🎛

```Python hl_lines="1  4"
{!> ../../docs_src/python_types/tutorial009b.py!}
```

////

//// tab | 🐍 3️⃣.1️⃣0️⃣ & 🔛

```Python hl_lines="1"

## Optionale Parameter

Auf die gleiche Weise können Sie optionale Query-Parameter deklarieren, indem Sie deren Defaultwert auf `None` setzen:

//// tab | Python 3.10+

```Python hl_lines="7"
{!> ../../docs_src/query_params/tutorial002_py310.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="9"
{!> ../../docs_src/query_params/tutorial002.py!}
```

////

🖼, 📣 🎚 `X-Token` 👈 💪 😑 🌅 🌘 🕐, 👆 💪 ✍:

//// tab | 🐍 3️⃣.6️⃣ & 🔛

```Python hl_lines="9"
{!> ../../docs_src/header_params/tutorial003.py!}
```

////

//// tab | 🐍 3️⃣.9️⃣ & 🔛

```Python hl_lines="9"
{!> ../../docs_src/header_params/tutorial003_py39.py!}
```

////

//// tab | 🐍 3️⃣.1️⃣0️⃣ & 🔛

```Python hl_lines="7"

///

## Імпортуйте `BaseModel` від Pydantic

Спочатку вам потрібно імпортувати `BaseModel` з `pydantic`:

//// tab | Python 3.8 і вище

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

////

//// tab | Python 3.10 і вище

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

////

## Створіть свою модель даних

//// tab | Linux, macOS, Windows Bash

<div class="termy">

```console
// Вы можете создать переменную окружения MY_NAME с помощью
$ export MY_NAME="Wade Wilson"

// Затем её можно использовать в других программах, например
$ echo "Hello $MY_NAME"

Hello Wade Wilson
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

///

## Импорт `Form`

Импортируйте `Form` из `fastapi`:

//// tab | Python 3.9+

```Python hl_lines="3"
{!> ../../docs_src/request_forms/tutorial001_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="1"
{!> ../../docs_src/request_forms/tutorial001_an.py!}
```

////

//// tab | Python 3.8+ без Annotated

/// tip | "Подсказка"

//// tab | Python 3.10+

```Python hl_lines="4  25"
{!> ../../docs_src/additional_status_codes/tutorial001_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="4  25"
{!> ../../docs_src/additional_status_codes/tutorial001_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="4  26"

//// tab | Python 3.10+

```Python hl_lines="4  25"
{!> ../../docs_src/additional_status_codes/tutorial001_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="4  25"
{!> ../../docs_src/additional_status_codes/tutorial001_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="4  26"

* 返回类型为 `HTTPBasicCredentials` 的对象：
    * 包含发送的 `username` 与 `password`

//// tab | Python 3.9+

```Python hl_lines="4  8  12"
{!> ../../docs_src/security/tutorial006_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="2  7  11"
{!> ../../docs_src/security/tutorial006_an.py!}
```

////

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

/// tip

尽可能选择使用 `Annotated` 的版本。

///