code: def open_atos(self):
      if DEBUG:
          print("atos -o %s -arch %s" % (self.binary, self.arch))
      cmdline = ["atos", "-o", self.binary, "-arch", self.arch]
      self.pipe = subprocess.Popen(
          cmdline,
          stdin=subprocess.PIPE,
          stdout=subprocess.PIPE,
          stderr=subprocess.PIPE,
      )
  
imports: import bisect
  import os
  import re
  import subprocess
  import sys
label_desc: Use image node_id 3 for calling the DarwinSymbolizer obj's underlying member method code with example usage: obj.open_atos() without return types