Method _validate_and_normalize_without_numpy

IPython/lib/display.py:192–209

(data, normalize)

    @staticmethod
    def _validate_and_normalize_without_numpy(data, normalize):
        import array
        import sys

        data = array.array('f', data)

        try:
            max_abs_value = float(max([abs(x) for x in data]))
        except TypeError as e:
            raise TypeError('Only lists of mono audio are '
                'supported if numpy is not installed') from e

        normalization_factor = Audio._get_normalization_factor(max_abs_value, normalize)
        scaled = array.array('h', [int(x / normalization_factor * 32767) for x in data])
        if sys.byteorder == 'big':
            scaled.byteswap()
        nchan = 1
        return scaled.tobytes(), nchan

    @staticmethod
    def _get_normalization_factor(max_abs_value, normalize):