python实现乘法表 - 码农教程

外层循环控制行数，内层循环控制输出内容

1）while循环实现乘法表

1 j = 1
2 while j < 10:
3     i = 1
4     while i <= j:
5         print("{} * {} = {:{}}".format(i,j,i*j,2),end=" ")
6         i += 1
7     print()
8     j += 1

输出结果==》
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

2）for循环实现乘法表

1 for i in range(1,10):
2     for j in range(1,i+1):
3         print("{} * {} = {:>2}".format(j,i,j*i),end=" ")
4     print()

输出结果==》
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

原文地址：https://www.cnblogs.com/longyuu/p/12738408.html