```Python hl_lines="1"
    {!> ../../../docs_src/python_types/tutorial009_py310.py!}
    ```

=== "Python 3.8+"

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

=== "Python 3.8+ বিকল্প"

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

#### `Union` বা `Optional` ব্যবহার

    ```Python hl_lines="12"
    {!> ../../../docs_src/body_nested_models/tutorial002_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="14"
    {!> ../../../docs_src/body_nested_models/tutorial002_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="14"
    {!> ../../../docs_src/body_nested_models/tutorial002.py!}
    ```

## Set-Typen

  val safari12Osx =
    sslLabsClients.first { it.userAgent == "Safari" && it.platform == "MacOS 10.14.6 Beta" }

  val okhttp = currentOkHttp(ianaSuitesNew)

  val okHttp_4_10 = historicOkHttp("4.10")
  val okHttp_3_14 = historicOkHttp("3.14")
  val okHttp_3_13 = historicOkHttp("3.13")
  val okHttp_3_11 = historicOkHttp("3.11")
  val okHttp_3_9 = historicOkHttp("3.9")

  val currentVm = currentVm(ianaSuitesNew)

  val conscrypt =

## 모델 어트리뷰트 선언

그 다음 모델 어트리뷰트와 함께 `Field`를 사용할 수 있습니다:

=== "Python 3.10+"

    ```Python hl_lines="11-14"
    {!> ../../../docs_src/body_fields/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="11-14"
    {!> ../../../docs_src/body_fields/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="12-15"

    this.server = server

    // Default after JDK 14, but we are avoiding tests that assume special setup.
    // System.setProperty("jdk.tls.client.enableSessionTicketExtension", "true")
    // System.setProperty("jdk.tls.server.enableSessionTicketExtension", "true")

    platform.assumeJdk9()
  }

  @Test
  fun testTlsv13Works() {
    // https://docs.oracle.com/en/java/javase/14/security/java-secure-socket-extension-jsse-reference-guide.html

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

⚙️ `Optional[str]` ↩️ `str` 🔜 ➡️ 👨‍🎨 ℹ 👆 🔍 ❌ 🌐❔ 👆 💪 🤔 👈 💲 🕧 `str`, 🕐❔ ⚫️ 💪 🤙 `None` 💁‍♂️.

`Optional[Something]` 🤙 ⌨ `Union[Something, None]`, 👫 🌓.

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

=== "🐍 3️⃣.6️⃣ & 🔛"

    ```Python hl_lines="1  4"

	_ = x[HandlerWalkDir-7]
	_ = x[HandlerStatVol-8]
	_ = x[HandlerDiskInfo-9]
	_ = x[HandlerNSScanner-10]
	_ = x[HandlerReadXL-11]
	_ = x[HandlerReadVersion-12]
	_ = x[HandlerDeleteFile-13]
	_ = x[HandlerDeleteVersion-14]
	_ = x[HandlerUpdateMetadata-15]
	_ = x[HandlerWriteMetadata-16]
	_ = x[HandlerCheckParts-17]
	_ = x[HandlerRenameData-18]
	_ = x[HandlerRenameFile-19]
	_ = x[HandlerReadAll-20]
	_ = x[HandlerServerVerify-21]

    ```Python hl_lines="12"
    {!> ../../../docs_src/body_nested_models/tutorial002_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="14"
    {!> ../../../docs_src/body_nested_models/tutorial002_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="14"
    {!> ../../../docs_src/body_nested_models/tutorial002.py!}
    ```

## Set 类型

但是随后我们考虑了一下，意识到标签不应该重复，它们很大可能会是唯一的字符串。

	_ = x[osMetricOpenFileRFd-7]
	_ = x[osMetricOpen-8]
	_ = x[osMetricOpenFileDirectIO-9]
	_ = x[osMetricLstat-10]
	_ = x[osMetricRemove-11]
	_ = x[osMetricStat-12]
	_ = x[osMetricAccess-13]
	_ = x[osMetricCreate-14]
	_ = x[osMetricReadDirent-15]
	_ = x[osMetricFdatasync-16]
	_ = x[osMetricSync-17]
	_ = x[osMetricLast-18]
}

И все же редактор знает, что это `str`, и поддерживает это.

#### `Tuple` и `Set`

Вы бы сделали то же самое, чтобы объявить `tuple` и `set`:

```Python hl_lines="1  4"
{!../../../docs_src/python_types/tutorial007.py!}
```

Это означает:

* Переменная `items_t` является `tuple` с 3 элементами: `int`, другим `int` и `str`.