func (c *Config) ApplyEnv() {
	configLock.RLock()
	defer configLock.RUnlock()

	if c.License != "" {
		os.Setenv("CONSOLE_SUBNET_LICENSE", c.License)
	}
	if c.APIKey != "" {
		os.Setenv("CONSOLE_SUBNET_API_KEY", c.APIKey)
	}
	if c.Proxy != "" {
		os.Setenv("CONSOLE_SUBNET_PROXY", c.Proxy)
	}
	os.Setenv("CONSOLE_SUBNET_URL", c.BaseURL)
}

// Update - in-place update with new license and registration information.

		isprel := globalBrowserConfig.IsHSTSPreload()
		os.Setenv("CONSOLE_SECURE_STS_SECONDS", strconv.Itoa(hstsSeconds))
		os.Setenv("CONSOLE_SECURE_STS_INCLUDE_SUB_DOMAINS", isubdom)
		os.Setenv("CONSOLE_SECURE_STS_PRELOAD", isprel)
	}

	if valueRefer := globalBrowserConfig.GetReferPolicy(); valueRefer != "" {
		os.Setenv("CONSOLE_SECURE_REFERRER_POLICY", valueRefer)
	}

	globalSubnetConfig.ApplyEnv()
}

		}
		globalIsCICD = sci
		os.Unsetenv("MARATHON_APP_LABEL_DCOS_PACKAGE_VERSION")
		os.Unsetenv(testCase.envName)
	}
}

// Tests if the environment we are running is in DCOS.
func TestIsDCOS(t *testing.T) {
	sci := globalIsCICD
	globalIsCICD = false
	defer func() {
		globalIsCICD = sci
	}()

	t.Setenv("MESOS_CONTAINER_NAME", "mesos-1111")
	dcos := IsDCOS()
	if !dcos {

      "cni_bin_dir": "/opt/cni/bin",
      "exclude_namespaces": [ "istio-system" ]
  }
}
`
)

func getEnv(key, fallback string) string {
	if value, ok := os.LookupEnv(key); ok {
		return value
	}
	return fallback
}

func setEnv(key, value string, t *testing.T) {
	t.Helper()
	err := os.Setenv(key, value)
	if err != nil {
		t.Fatalf("Couldn't set environment variable, err: %v", err)
	}
}

package main

import (
	"bufio"
	"bytes"
	"internal/testenv"
	"os"
	"path/filepath"
	"runtime"
	"strings"
	"sync"
	"testing"
)

// TestMain executes the test binary as the addr2line command if
// GO_ADDR2LINETEST_IS_ADDR2LINE is set, and runs the tests otherwise.
func TestMain(m *testing.M) {
	if os.Getenv("GO_ADDR2LINETEST_IS_ADDR2LINE") != "" {
		main()
		os.Exit(0)
	}

			continue
		}
		if got := fi.ModTime(); !got.Equal(test.want) {
			t.Errorf("%s: got modtime %v, want %v", test.name, got, test.want)
		}
	}
}

func TestCVE202127919(t *testing.T) {
	t.Setenv("GODEBUG", "zipinsecurepath=0")
	// Archive containing only the file "../test.txt"
	data := []byte{
		0x50, 0x4b, 0x03, 0x04, 0x14, 0x00, 0x08, 0x00,
		0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

			outputFilePath := filepath.Join(tmpDir, "output.txt")
			if _, err := os.Create(outputFilePath); err != nil {
				t.Fatalf("Failed to create temp file for IPTables rule output: %v", err)
			}
			t.Setenv(dependencies.DryRunFilePath.Name, outputFilePath)

			pod := buildFakeDryRunPod()
			pod.ObjectMeta.Annotations = tt.annotations
			pod.Spec.Containers[1].Env = tt.proxyEnv

For example you could have a file `main.py` with:

```Python hl_lines="3"
import os

name = os.getenv("MY_NAME", "World")
print(f"Hello {name} from Python")
```

!!! tip
    The second argument to <a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> is the default value to return.

这种做法相当常见，有一个名称，这些环境变量通常放在一个名为 `.env` 的文件中，该文件被称为“dotenv”。

!!! tip
    以点 (`.`) 开头的文件是 Unix-like 系统（如 Linux 和 macOS）中的隐藏文件。

    但是，dotenv 文件实际上不一定要具有确切的文件名。

Pydantic 支持使用外部库从这些类型的文件中读取。您可以在<a href="https://docs.pydantic.dev/latest/concepts/pydantic_settings/#dotenv-env-support" class="external-link" target="_blank">Pydantic 设置: Dotenv (.env) 支持</a>中阅读更多相关信息。

!!! tip

Sie könnten zum Beispiel eine Datei `main.py` haben mit:

```Python hl_lines="3"
import os

name = os.getenv("MY_NAME", "World")
print(f"Hello {name} from Python")
```

!!! tip "Tipp"
    Das zweite Argument für <a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> ist der zurückzugebende Defaultwert.