python-for 循环打印乘法口诀

核心代码：
for i in range(1,10):
    for j in range(1,10):
        if j <= i:
            print(j,"*",i,"=",j*i,end=" | ")
    print("")
效果如下：

1 * 1 = 1 |
1 * 2 = 2 | 2 * 2 = 4 |
1 * 3 = 3 | 2 * 3 = 6 | 3 * 3 = 9 |
1 * 4 = 4 | 2 * 4 = 8 | 3 * 4 = 12 | 4 * 4 = 16 |
1 * 5 = 5 | 2 * 5 = 10 | 3 * 5 = 15 | 4 * 5 = 20 | 5 * 5 = 25 |
1 * 6 = 6 | 2 * 6 = 12 | 3 * 6 = 18 | 4 * 6 = 24 | 5 * 6 = 30 | 6 * 6 = 36 |
1 * 7 = 7 | 2 * 7 = 14 | 3 * 7 = 21 | 4 * 7 = 28 | 5 * 7 = 35 | 6 * 7 = 42 | 7 * 7 = 49 |
1 * 8 = 8 | 2 * 8 = 16 | 3 * 8 = 24 | 4 * 8 = 32 | 5 * 8 = 40 | 6 * 8 = 48 | 7 * 8 = 56 | 8 * 8 = 64 |
1 * 9 = 9 | 2 * 9 = 18 | 3 * 9 = 27 | 4 * 9 = 36 | 5 * 9 = 45 | 6 * 9 = 54 | 7 * 9 = 63 | 8 * 9 = 72 | 9 * 9 = 81 |