code: def read(self, size):
          
          now = time.time()
          missing_dt = self._sleep_until - now
          if missing_dt > 0:
              time.sleep(missing_dt)
          self._sleep_until = time.time() + self._sleep_time(size)
          data = (self._wavep.readframes(size)
                  if self._wavep
                  else self._fp.read(size))
          #  When reach end of audio stream, pad remainder with silence (zeros).
          if not data:
              return b'\x00' * size
          return data
docs: Read bytes from the stream and block until sample rate is achieved.
  
          Args:
            size: number of bytes to read from the stream.