Das bedeutet auch, dass Sie in Python 3.10 `Something | None` verwenden können:

//// tab | Python 3.10+

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

////

//// tab | Python 3.8+

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

////

//// tab | Python 3.8+ Alternative

```Python hl_lines="1  4"

//// tab | لینوکس، مک‌اواس، ویندوز بش

<div class="termy">

```console
// می‌تونی یه متغیر محیطی به اسم MY_NAME بسازی با
$ export MY_NAME="Wade Wilson"

// بعد می‌تونی با برنامه‌های دیگه ازش استفاده کنی، مثل
$ echo "Hello $MY_NAME"

Hello Wade Wilson
```

</div>

////

//// tab | ویندوز پاورشل

<div class="termy">

```console

///

//// tab | Linux, macOS

<div class="termy">

```console
$ source .venv/bin/activate
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console
$ .venv\Scripts\Activate.ps1
```

</div>

////

//// tab | Windows Bash

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

<div class="termy">

```console
// You could create an env var MY_NAME with
$ export MY_NAME="Wade Wilson"

// Then you could use it with other programs, like
$ echo "Hello $MY_NAME"

Hello Wade Wilson
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console

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

<div class="termy">

```console
// Je zou een omgevingsvariabele MY_NAME kunnen maken met
$ export MY_NAME="Wade Wilson"

// Dan zou je deze met andere programma's kunnen gebruiken, zoals
$ echo "Hello $MY_NAME"

Hello Wade Wilson
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

Обратите внимание, что в приведенном выше коде мы два раза пишем `CommonQueryParams`:

//// tab | Python 3.6+ без Annotated

/// tip | Подсказка

Рекомендуется использовать версию с `Annotated` если возможно.

///

```Python
commons: CommonQueryParams = Depends(CommonQueryParams)
```

////

//// tab | Python 3.6+

```Python
commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]

## Anotación de tipos vs `Depends`

Nota cómo escribimos `CommonQueryParams` dos veces en el código anterior:

//// tab | Python 3.8+

```Python
commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]
```

////

//// tab | Python 3.8+ sin `Annotated`

/// tip | Consejo

Prefiere usar la versión `Annotated` si es posible.

///

```Python

## Anotações de Tipo vs `Depends`

Perceba como escrevemos `CommonQueryParams` duas vezes no código abaixo:

//// tab | Python 3.8+

```Python
commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]
```

////

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

/// tip | Dica

Utilize a versão com `Annotated` se possível.

///

```Python

## Type annotation vs `Depends` { #type-annotation-vs-depends }

Notice how we write `CommonQueryParams` twice in the above code:

//// tab | Python 3.8+

```Python
commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]
```

////

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

/// tip

Prefer to use the `Annotated` version if possible.

///

```Python

This also means that in Python 3.10, you can use `Something | None`:

//// tab | Python 3.10+

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

////

//// tab | Python 3.8+

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

////

//// tab | Python 3.8+ alternative

```Python hl_lines="1  4"