code: def main():
      dirname = os.path.dirname(__file__)
      shutil.copy2(
          os.path.join(dirname, "yacc.py"),
          os.path.join(dirname, "yacc.py.bak"),
      )
      with open(os.path.join(dirname, "yacc.py"), "r") as f:
          lines = f.readlines()
  
      parse_start, parse_end = get_source_range(lines, "parsedebug")
      parseopt_start, parseopt_end = get_source_range(lines, "parseopt")
      parseopt_notrack_start, parseopt_notrack_end = get_source_range(
          lines, "parseopt-notrack"
      )
  
      # Get the original source
      orig_lines = lines[parse_start:parse_end]
  
      # Filter the DEBUG sections out
      parseopt_lines = filter_section(orig_lines, "DEBUG")
  
      # Filter the TRACKING sections out
      parseopt_notrack_lines = filter_section(
          parseopt_lines, "TRACKING"
      )
  
      # Replace the parser source sections with updated versions
      lines[
          parseopt_notrack_start:parseopt_notrack_end
      ] = parseopt_notrack_lines
      lines[parseopt_start:parseopt_end] = parseopt_lines
  
      lines = [line.rstrip() + "\n" for line in lines]
      with open(os.path.join(dirname, "yacc.py"), "w") as f:
          f.writelines(lines)
  
      print("Updated yacc.py")
  
imports: import os.path
  import shutil
label_desc: Use image node_id 3 for calling a global function with example usage: main() without return types