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_)