code: def _check_script(self, script_name, *cmd_line_switches):
      if not __debug__:
          cmd_line_switches += ("-" + "O" * sys.flags.optimize,)
      run_args = cmd_line_switches + (script_name, self.start_method)
      rc, out, err = assert_python_ok(*run_args, __isolated=False)
      self._check_output(script_name, rc, out, err)
  
imports: from test import support
  from test.support import import_helper
  import importlib
  import importlib.machinery
  import unittest
  import sys
  import os
  import os.path
  import py_compile
  from test.support import os_helper
  from test.support.script_helper import make_pkg, make_script, make_zip_pkg, make_zip_script, assert_python_ok
  import multiprocess
label_desc: Use image node_id 3 for calling the MultiProcessingCmdLineMixin obj's underlying member method code with example usage: obj._check_script(script_name) without return types