"""
  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,

            param("env.JAVA_HOME", javaHome(BuildToolBuildJvm, Os.LINUX))
            // https://github.com/gradle/gradle-private/issues/4504
            param("env.JDK8", javaHome(OpenJdk8, Os.LINUX))
            param("env.JDK11", javaHome(OpenJdk11, Os.LINUX))
            param("env.JDK17", javaHome(OpenJdk17, Os.LINUX))

    ): 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,

	fmt.Fprintf(w, "\tfile:line\n")
}

func usage() {
	printUsage(os.Stderr)
	os.Exit(2)
}

func main() {
	log.SetFlags(0)
	log.SetPrefix("addr2line: ")
	counter.Open()

	// pprof expects this behavior when checking for addr2line
	if len(os.Args) > 1 && os.Args[1] == "--help" {
		printUsage(os.Stdout)
		os.Exit(0)
	}

	flag.Usage = usage
	flag.Parse()
	counter.Inc("addr2line/invocations")

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 err != nil {
		log.Fatalf("%v\n", err)
	}
	os.Exit(exitCode)
}

func runMain() (int, error) {
	var err error
	tmpdir, err = os.MkdirTemp("", "go_ios_exec_")
	if err != nil {
		return 1, err
	}
	if !debug {
		defer os.RemoveAll(tmpdir)
	}

	appdir := filepath.Join(tmpdir, "gotest.app")
	os.RemoveAll(appdir)

	if err := assembleApp(appdir, os.Args[1]); err != nil {
		return 1, err
	}

// 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

     *
     * @param os the output stream
     * @return the wrapped output stream
     */
    protected static OutputStream wrap(final OutputStream os) {
        if (os instanceof BufferedOutputStream) {
            return os;
        }
        if (os instanceof ByteArrayOutputStream) {
            return os;
        }

	}

	// Open the input and create the output file
	input, err := os.Open(inputFileName)
	fatalErr(err)
	defer input.Close()

	// Decrypt the inspect data
	switch {
	case *keyHex != "":
		// Backup any already existing output file
		_, err := os.Stat(outputFileName)
		if err == nil {
			err := os.Rename(outputFileName, outputFileName+"."+time.Now().Format("20060102150405"))
			if err != nil {

package bufio_test

import (
	"bufio"
	"bytes"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func ExampleWriter() {
	w := bufio.NewWriter(os.Stdout)
	fmt.Fprint(w, "Hello, ")
	fmt.Fprint(w, "world!")
	w.Flush() // Don't forget to flush!
	// Output: Hello, world!
}

func ExampleWriter_AvailableBuffer() {
	w := bufio.NewWriter(os.Stdout)
	for _, i := range []int64{1, 2, 3, 4} {
		b := w.AvailableBuffer()