code: def run_python(self, *argv):
      proc = subprocess.run(
          [sys.executable, *argv],
          capture_output=True,
          text=True,
      )
      return proc.returncode, proc.stdout, proc.stderr
  
imports: import contextlib
  import os
  import os.path
  import subprocess
  import sys
  import tempfile
  import threading
  from textwrap import dedent
  import unittest
  from test import support
  from test.support import os_helper
  from test.support import interpreters
label_desc: Use image node_id 5 for calling the TestBase obj's underlying member method code with example usage: obj.run_python() and returns: proc,  proc,  proc