1至9九个数字，横竖都有3个格，思考怎么使每行、每列和对角线上的三数之和都等于15

# !/usr/bin/env python# -*- coding:utf-8 -*-# Author:Hiuhung Wanlist0 = []  # 除了中间那个数是5，周围的是别的数for i in range(1, 10):    if i == 5:        continue    list0.append(i)'''假设第一个数是x,第二个是y,那么这9个数应该是：x	        y	    15-x-y20-2x-y	    5	    2x+y-10x+y-5	    10-y	10-x    '''count = 0for x in list0:    list_temp = list0[:]  # 复制    list_temp.remove(x)   # 去除x后的列表    for y in list_temp:        set0 = set([x, y, 15 - x - y, 20 - 2 * x - y, 5, 2 * x + y - 10, x + y - 5, 10 - y, 10 - x])        if (15-x-y) in list0 and (20-2*x-y) in list0 and (2*x+y-10) in list0 and (x+y-5) in list0 and (10-y) in list0 and (10-x) in list0 and len(set0) == 9:            count += 1            print("第%s种情况：x = %s, y = %s" % (count, x, y))            print(x, y, 15 - x - y)            print(20 - 2 * x - y, 5, 2 * x + y - 10)            print(x + y - 5, 10 - y, 10 - x)

　　

运行结果如下：

第1种情况：x = 2, y = 72 7 69 5 14 3 8第2种情况：x = 2, y = 92 9 47 5 36 1 8第3种情况：x = 4, y = 34 3 89 5 12 7 6第4种情况：x = 4, y = 94 9 23 5 78 1 6第5种情况：x = 6, y = 16 1 87 5 32 9 4第6种情况：x = 6, y = 76 7 21 5 98 3 4第7种情况：x = 8, y = 18 1 63 5 74 9 2第8种情况：x = 8, y = 38 3 41 5 96 7 2Process finished with exit code 0