code: def read_file_bytes(input_file_path):
      
      contents = None
      try:
          with io.open(input_file_path, "rb") as input_file:
              contents = input_file.read()
      except:
          pass
      return contents
docs: Read the file at the given file path
      and return its contents as a byte string,
      or ``None`` if an error occurred.
  
      :param string input_file_path: the file path
      :rtype: bytes