def manhattan(h1, h2): # # 7 us @array, 31 us @list \w 100 bins
    r"""
    Equal to Minowski distance with :math:`p=1`.
    
    See also
    --------
    minowski
    """
    h1, h2 = __prepare_histogram(h1, h2)
    return scipy.sum(scipy.absolute(h1 - h2))