#九九乘法
for i in range(10):
print(" ".join(["%dX%d=%-2d"%(m,i,m*i) for m in range(1,i+1)])) # %d按照整型格式化输出,-表示左对齐,2表示数字不足2位则补齐两位,不足位置用空格
1X1=1
1X2=2 2X2=4
1X3=3 2X3=6 3X3=9
1X4=4 2X4=8 3X4=12 4X4=16
1X5=5 2X5=10 3X5=15 4X5=20 5X5=25
1X6=6 2X6=12 3X6=18 4X6=24 5X6=30 6X6=36
1X7=7 2X7=14 3X7=21 4X7=28 5X7=35 6X7=42 7X7=49
1X8=8 2X8=16 3X8=24 4X8=32 5X8=40 6X8=48 7X8=56 8X8=64
1X9=9 2X9=18 3X9=27 4X9=36 5X9=45 6X9=54 7X9=63 8X9=72 9X9=81
#九九加法
for i in range(10):
print(" ".join(["%d+%d=%-2d"%(m,i,m+i) for m in range(1,i+1)]))