code: def initfp(self, file):
      self._file = file
      self._framerate = 0
      self._nchannels = 0
      self._sampwidth = 0
      self._framesize = 0
      self._nframes = AUDIO_UNKNOWN_SIZE
      self._nframeswritten = 0
      self._datawritten = 0
      self._datalength = 0
      self._info = b""
      self._comptype = "ULAW"
  
imports: from collections import namedtuple
  import warnings
label_desc: Use image node_id 5 for calling the Au_write obj's underlying member method code with example usage: obj.initfp(file) without return types