- Added a new `FileKeyRef` field to containers, allowing them to load variables from files by setting this field.
  
  Introduced the `EnvFiles` feature gate to govern activation of this functionality. ([#132626](https://github.com/kubernetes/kubernetes/pull/132626), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG API Machinery, Apps, Node and Testing]

/**
 * Tests {@code ActivationOS}.
 *
 */
class ActivationOSTest {

    @Test
    void testHashCodeNullSafe() {
        new ActivationOS().hashCode();
    }

    @Test
    void testEqualsNullSafe() {
        assertFalse(new ActivationOS().equals(null));

        new ActivationOS().equals(new ActivationOS());
    }

    @Test
    void testEqualsIdentity() {

/// note

If you are a Python expert, and you already know everything about type hints, skip to the next chapter.

///

## Motivation { #motivation }

Let's start with a simple example:

{* ../../docs_src/python_types/tutorial001_py310.py *}

Calling this program outputs:

```
John Doe
```

The function does the following:

/// note | Remarque

Si vous êtes un expert Python, et que vous savez déjà tout sur les annotations de type, passez au chapitre suivant.

///

## Motivation { #motivation }

Commençons par un exemple simple :

{* ../../docs_src/python_types/tutorial001_py310.py *}

Exécuter ce programme affiche :

```
John Doe
```

La fonction fait ce qui suit :

        subgraph venv2[.venv]
            harry-3[harry v3]
        end
    end
    stone-project ~~~ azkaban-project
```

## What Does Activating a Virtual Environment Mean { #what-does-activating-a-virtual-environment-mean }

When you activate a virtual environment, for example with:

//// tab | Linux, macOS

<div class="termy">

```console

By creating this pull request I represent that I have the right to license the 
contributions to the project maintainers under the Apache 2 license.

## Description


## Motivation and Context


## How to test this PR?


## Types of changes
- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)

/// note | Not

Eğer bir Python uzmanıysanız ve type hints hakkında her şeyi zaten biliyorsanız, sonraki bölüme geçin.

///

## Motivasyon { #motivation }

Basit bir örnekle başlayalım:

{* ../../docs_src/python_types/tutorial001_py310.py *}

Bu programı çalıştırınca şu çıktıyı alırsınız:

```
John Doe
```

Fonksiyon şunları yapar:

/// note | Примітка

Якщо ви експерт у Python і ви вже знаєте все про підказки типів, перейдіть до наступного розділу.

///

## Мотивація { #motivation }

Давайте почнемо з простого прикладу:

{* ../../docs_src/python_types/tutorial001_py310.py *}

Виклик цієї програми виводить:

```
John Doe
```

Функція виконує наступне:

tricky to configure. As a shortcut, you can paste [OkHttpDebugLogging.kt]. Then enable debug logging
for whichever features you need:

```
OkHttpDebugLogging.enableHttp2()
OkHttpDebugLogging.enableTaskRunner()
```

### Activating on Android

```
$ adb shell setprop log.tag.okhttp.Http2 DEBUG
$ adb shell setprop log.tag.okhttp.TaskRunner DEBUG
$ adb logcat '*:E' 'okhttp.Http2:D' 'okhttp.TaskRunner:D'
```

### HTTP/2 Frame Logging

**FastAPI** 完全基于这些类型提示构建，它们带来了许多优势和好处。

但即使你从不使用 **FastAPI**，了解一些类型提示也会让你受益。

/// note | 注意

如果你已经是 Python 专家，并且对类型提示了如指掌，可以跳到下一章。

///

## 动机 { #motivation }

让我们从一个简单的例子开始：

{* ../../docs_src/python_types/tutorial001_py310.py *}

运行这个程序会输出：

```
John Doe
```

这个函数做了下面这些事情：

* 接收 `first_name` 和 `last_name`。