## Typannotation vs. `Depends`

Beachten Sie, wie wir `CommonQueryParams` im obigen Code zweimal schreiben:

//// tab | Python 3.8+

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

////

//// tab | Python 3.8+ nicht annotiert

/// tip | Tipp

Bevorzugen Sie die `Annotated`-Version, falls möglich.

///

```Python

#dee2e6}.nav-tabs.flex-column.nav-tabs-right{border-left:1px solid #dee2e6;border-right:0}.nav-tabs.flex-column.nav-tabs-right .nav-link{border-bottom-left-radius:0;border-bottom-right-radius:.25rem;border-top-left-radius:0;border-top-right-radius:.25rem;margin-left:-1px}.nav-tabs.flex-column.nav-tabs-right .nav-link:focus,.nav-tabs.flex-column.nav-tabs-right .nav-link:hover{border-color:#e9ecef #e9ecef #e9ecef transparent}.nav-tabs.flex-column.nav-tabs-right .nav-item.show .nav-link,.nav-tabs.flex-column.nav-tabs-right...

//// 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">

var(--bs-body-bg);border-bottom:var(--bs-nav-tabs-border-width) solid var(--bs-nav-tabs-border-color)}.nav-tabs .nav-link{margin-bottom:calc(-1 * var(--bs-nav-tabs-border-width));border:var(--bs-nav-tabs-border-width) solid transparent;border-top-left-radius:var(--bs-nav-tabs-border-radius);border-top-right-radius:var(--bs-nav-tabs-border-radius)}.nav-tabs .nav-link:focus,.nav-tabs .nav-link:hover{isolation:isolate;border-color:var(--bs-nav-tabs-link-hover-border-color)}.nav-tabs .nav-link.disabled,.nav-tabs ....

///

//// tab | Hypercorn

* <a href="https://github.com/pgjones/hypercorn" class="external-link" target="_blank">Hypercorn</a>, HTTP/2にも対応しているASGIサーバ。

<div class="termy">

```console
$ pip install hypercorn

---> 100%
```

</div>

...または、これら以外のASGIサーバ。

////

そして、チュートリアルと同様な方法でアプリケーションを起動して下さい。ただし、以下の様に`--reload` オプションは使用しないで下さい:

//// tab | Uvicorn

<div class="termy">

Esto también significa que en Python 3.10, puedes usar `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"

یعنی توی پایتون 3.10، می‌تونی از `Something | None` استفاده کنی:

//// 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+ جایگزین

```Python hl_lines="1  4"

?sto????o&k&akanamay?ihcugawakijuf??nihso?t&asimawakihci?ukoh??uhc??spla-imanim?u&b&nan?onim??fok?hsok?rust????ubon,??ix,ka&rabi!.&a&bukust?gok?kan!ihcatih??m&a&sak?timo?wi??ihsak?ustomihs??ni?r&a&hihcu?way??u&agimusak?ihcust???t&ag&amay?eman??oihcatih??w&ag&arukas?o??os??yi&moihcatih?rom???e&bomot?dirot?not?tadomihs??i&a&k&as?ot??rao??esukihc?gahakat?h&asa?catih??k&a&rabi?saguyr??ihsani?uy??ma?rukustamat??o&dnab?giad?him?kati?rihsijuf?soj?t&asorihs?im??yihcay??u&fius?kihsu?simak????sagan!.&a&m&...

Isso também significa que no Python 3.10, você pode utilizar `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"

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

<div class="termy">

```console
// Você pode criar uma variável de ambiente MY_NAME com
$ export MY_NAME="Wade Wilson"

// Então você pode usá-la com outros programas, como
$ echo "Hello $MY_NAME"

Hello Wade Wilson
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console