方法一
1 i = 1 2 while i < 10: 3 k = 1 4 while k <= i: 5 print('%d*%d=%2d '% (i,k,i*k),end='') #end=‘’ 表示不换行（系统默认输出完毕换行） 6 k += 1 7 print() 8 i += 1 9 10 11 输出结果 12 1*1= 1 13 2*1= 2 2*2= 4 14 3*1= 3 3*2= 6 3*3= 9 15 4*1= 4 4*2= 8 4*3=12 4*4=16 16 5*1= 5 5*2=10 5*3=15 5*4=20 5*5=25 17 6*1= 6 6*2=12 6*3=18 6*4=24 6*5=30 6*6=36 18 7*1= 7 7*2=14 7*3=21 7*4=28 7*5=35 7*6=42 7*7=49 19 8*1= 8 8*2=16 8*3=24 8*4=32 8*5=40 8*6=48 8*7=56 8*8=64 20 9*1= 9 9*2=18 9*3=27 9*4=36 9*5=45 9*6=54 9*7=63 9*8=72 9*9=81
方法二
1 a = 9 2 while a > 0: 3 i = 1 4 while i <= a: 5 6 print('%d * %d = %2d '%(a,i,a*i),end= '') 7 i += 1 8 print() 9 a -= 1 10 11 输出结果 12 9 * 1 = 9 9 * 2 = 18 9 * 3 = 27 9 * 4 = 36 9 * 5 = 45 9 * 6 = 54 9 * 7 = 63 9 * 8 = 72 9 * 9 = 81 13 9 * 1 = 9 9 * 2 = 18 9 * 3 = 27 9 * 4 = 36 9 * 5 = 45 9 * 6 = 54 9 * 7 = 63 9 * 8 = 72 9 * 9 = 81 14 8 * 1 = 8 8 * 2 = 16 8 * 3 = 24 8 * 4 = 32 8 * 5 = 40 8 * 6 = 48 8 * 7 = 56 8 * 8 = 64 15 7 * 1 = 7 7 * 2 = 14 7 * 3 = 21 7 * 4 = 28 7 * 5 = 35 7 * 6 = 42 7 * 7 = 49 16 6 * 1 = 6 6 * 2 = 12 6 * 3 = 18 6 * 4 = 24 6 * 5 = 30 6 * 6 = 36 17 5 * 1 = 5 5 * 2 = 10 5 * 3 = 15 5 * 4 = 20 5 * 5 = 25 18 4 * 1 = 4 4 * 2 = 8 4 * 3 = 12 4 * 4 = 16 19 3 * 1 = 3 3 * 2 = 6 3 * 3 = 9 20 2 * 1 = 2 2 * 2 = 4 21 1 * 1 = 1