python打印九九乘法表的菱形实现

1 NUM = 9
 2 for i in range(1, NUM+1):
 3     print()
 4     for j in range(1, i+1):
 5         if j == 1:
 6             print(5*(NUM-i)*(" "), end="")
 7         print("{0} * {1} = {2} ".format(j, i, i*j), end="")
 8
 9 for i in range(NUM-1, 0, -1):
10     print()
11     for j in range(1, i+1):
12         if j == 1:
13             print(5*(NUM-i)*(" "), end="")
14         print("{0} * {1} = {2} ".format(j, i, i*j), end="")
15
16

效果如图：

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