def _print_removed_output(original, new, type_):
    """
    function printing the output of functions that remove datapoints.

    Parameters
    ----------
    original : int
        original length of the dataset
    new : int
        length of the new dataset
    type_ : str
        'removed' or 'dropped'

    """
    print('Original dataset:', original, 'datapoints')
    print('New dataset:', new, 'datapoints')
    print(original - new, 'datapoints ', type_)
