How to use the pydub.utils.audioop.avg function in pydub

def remove_data_dc(data, off):
            if not off:
                off = audioop.avg(data, self.sample_width)
            return audioop.bias(data, self.sample_width, -off)

def get_dc_offset(self, channel=1):
        """
        Returns a value between -1.0 and 1.0 representing the DC offset of a
        channel (1 for left, 2 for right).
        """
        if not 1 <= channel <= 2:
            raise ValueError("channel value must be 1 (left) or 2 (right)")

        if self.channels == 1:
            data = self._data
        elif channel == 1:
            data = audioop.tomono(self._data, self.sample_width, 1, 0)
        else:
            data = audioop.tomono(self._data, self.sample_width, 0, 1)

        return float(audioop.avg(data, self.sample_width)) / self.max_possible_amplitude

def remove_data_dc(data, off):
            if not off:
                off = audioop.avg(data, self.sample_width)
            return audioop.bias(data, self.sample_width, -off)

def get_dc_offset(self, channel=1):
        """
        Returns a value between -1.0 and 1.0 representing the DC offset of a
        channel (1 for left, 2 for right).
        """
        if not 1 <= channel <= 2:
            raise ValueError("channel value must be 1 (left) or 2 (right)")

        if self.channels == 1:
            data = self._data
        elif channel == 1:
            data = audioop.tomono(self._data, self.sample_width, 1, 0)
        else:
            data = audioop.tomono(self._data, self.sample_width, 0, 1)

        return float(audioop.avg(data, self.sample_width)) / self.max_possible_amplitude