list1 = [ 4, 7, 7, 3, 3, 3, 2, 1 ]list2 = [ 5, 4, 3, 3, 2, 2, 2, 1, 1, 1 ]def havel_hakimi_algo( degree_list ):        degree_list.sort( reverse = True )    print degree_list    for degree in degree_list:        if degree < 0:            return False        if degree != 0:            remove_val = degree_list.pop( 0 )            for index in range( remove_val ):                degree_list[index] -= 1            havel_hakimi_algo( degree_list )    return Trueprint havel_hakimi_algo( list1 )print havel_hakimi_algo( list2 )