code: def find_symbol(pid, symbol):
      
      for mapping in read_proc_maps(pid):
  
          if not mapping.filename or not os.path.exists(mapping.filename):
              continue
          # We're interested only in the main mapping for each library
          # It looks like executable bit and 0 offset suits our needs
          if 'x' not in mapping.perms or mapping.offset:
              continue
  
          offset = find_symbol_in_file(mapping.filename, symbol)
  
          # This is probably horribly wrong, we say
          # that symbol has absolute value if it is located in executable
          absolute = os.path.samefile(mapping.filename, get_pid_executable(pid))
  
          if offset is not None:
              yield mapping, offset, absolute
docs: Return [(MemMap, value), ...]