code: def open_addr2line(self):
      cmd = ["addr2line", "-f", "-e", self.binary]
      if DEBUG:
          print(" ".join(cmd))
      return subprocess.Popen(
          cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE
      )
  
imports: import bisect
  import os
  import re
  import subprocess
  import sys
label_desc: Use image node_id 2 for calling the Addr2LineSymbolizer obj's underlying member method code with example usage: obj.open_addr2line() and returns: subprocess