code: def process_stdin(self):
      self.frame_no = 0
  
      if sys.version_info[0] == 2:
          sys.stdout = os.fdopen(sys.stdout.fileno(), "w", 0)
      else:
          # Unbuffered output is not supported in Python 3
          sys.stdout = os.fdopen(sys.stdout.fileno(), "w")
  
      while True:
          line = sys.stdin.readline()
          if not line:
              break
          self.current_line = line.rstrip()
          # 0 0x7f6e35cf2e45  (/blah/foo.so+0x11fe45)
          stack_trace_line_format = (
              "^( *#([0-9]+) *)(0x[0-9a-f]+) *\((.*)\+(0x[0-9a-f]+)\)"
          )
          match = re.match(stack_trace_line_format, line)
          if not match:
              print(self.current_line)
              continue
          if DEBUG:
              print(line)
          _, frameno_str, addr, binary, offset = match.groups()
          if frameno_str == "0":
              # Assume that frame #0 is the first frame of new stack trace.
              self.frame_no = 0
          original_binary = binary
          if self.binary_name_filter:
              binary = self.binary_name_filter(binary)
          symbolized_line = self.symbolize_address(addr, binary, offset)
          if not symbolized_line:
              if original_binary != binary:
                  symbolized_line = self.symbolize_address(
                      addr, binary, offset
                  )
          self.print_symbolized_lines(symbolized_line)
  
imports: import bisect
  import os
  import re
  import subprocess
  import sys
label_desc: Use image node_id 4 for calling the SymbolizationLoop obj's underlying member method code with example usage: obj.process_stdin() without return types