مثلاً می‌تونی یه فایل `main.py` داشته باشی با:

```Python hl_lines="3"
import os

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

/// tip

آرگومان دوم <a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> مقدار پیش‌فرضیه که برمی‌گردونه.

		}

		// If global profiler is set stop before we exit.
		globalProfilerMu.Lock()
		defer globalProfilerMu.Unlock()
		for _, p := range globalProfiler {
			p.Stop()
		}

		if success {
			os.Exit(0)
		}

		os.Exit(1)
	}

	stopProcess := func() bool {
		shutdownHealMRFWithTimeout() // this can take time sometimes, it needs to be executed
		// before stopping s3 operations

    name: Go ${{ matrix.go-version }} on ${{ matrix.os }} - healing
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        go-version: [1.24.x]
        os: [ubuntu-latest]
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-go@v5
        with:
          go-version: ${{ matrix.go-version }}
          check-latest: true
      - name: Build on ${{ matrix.os }}
        if: matrix.os == 'ubuntu-latest'

            .filter { it.os == os }
            .forEach {
                buildType(FlakyTestQuarantine(model, stage, it))
            }
    })

class FlakyTestQuarantine(
    model: CIBuildModel,
    stage: Stage,
    testCoverage: TestCoverage,
) : OsAwareBaseGradleBuildType(os = testCoverage.os, stage = stage, init = {
        val os = testCoverage.os
        val arch = testCoverage.arch

  """
  makefile_download_dir = os.path.join(_TF_WORKSPACE_ROOT, 'tensorflow',
                                       'contrib', 'makefile', 'downloads')
  if os.path.isdir(makefile_download_dir):
    for root, _, filenames in os.walk(makefile_download_dir):
      for f in filenames:
        if f.endswith('BUILD'):
          os.remove(os.path.join(root, f))


def get_var(environ_cp,

    ): List<PerformanceTest>
}

typealias OperatingSystemToTestProjectPerformanceTestDurations = Map<Os, Map<String, List<PerformanceTestDuration>>>

const val MAX_TEST_PROJECTS_PER_BUCKET = 10

data class PerformanceTestSpec(
    val performanceTestType: PerformanceTestType,
    val os: Os,
)

class StatisticsBasedPerformanceTestBucketProvider(
    private val model: CIBuildModel,

    buildType.steps {
        extraSteps()
        killProcessStep(buildType, KILL_PROCESSES_STARTED_BY_GRADLE, os, arch, executionMode = ExecutionMode.ALWAYS)
        checkCleanM2AndAndroidUserHome(os, buildType)
    }

    applyDefaultDependencies(model, buildType)
}

private fun BaseGradleBuildType.addRetrySteps(
    model: CIBuildModel,
    gradleTasks: String,
    os: Os = Os.LINUX,

// license that can be found in the LICENSE file.

package main

import (
	"flag"
	"fmt"
	"log"
	"os"
	"strings"

	"cmd/internal/buildid"
	"cmd/internal/telemetry/counter"
)

func usage() {
	fmt.Fprintf(os.Stderr, "usage: go tool buildid [-w] file\n")
	flag.PrintDefaults()
	os.Exit(2)
}

var wflag = flag.Bool("w", false, "write build ID")

func main() {
	log.SetPrefix("buildid: ")

        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4
        with:
          path: ~/.mimir/local
          key: mimir-${{ runner.os }}-initial-${{ hashFiles('**/pom.xml') }}
          restore-keys: |
            mimir-${{ runner.os }}-initial-
            mimir-${{ runner.os }}-

      - name: Set up Maven
        shell: bash

// process when successful.
func restartProcess() error {
	if runtime.GOOS == globalWindowsOSName {
		cmd := exec.Command(os.Args[0], os.Args[1:]...)
		cmd.Stdout = os.Stdout
		cmd.Stderr = os.Stderr
		cmd.Stdin = os.Stdin
		cmd.Env = os.Environ()
		err := cmd.Run()
		if err == nil {
			os.Exit(0)
		}
		return err
	}

	// Use the original binary location. This works with symlinks such that if