code: def setpos(self, pos):
      if pos < 0 or pos > self.getnframes():
          raise Error("position not in range")
      if self._data_pos is None:
          raise OSError("cannot seek")
      self._file.seek(self._data_pos + pos * self._framesize)
      self._soundpos = pos
  
imports: from collections import namedtuple
  import warnings
label_desc: Use image node_id 19 for calling the Au_read obj's underlying member method code with example usage: obj.setpos(pos) without return types