1、输出格式化/多个输出格式化
1 x= 4 2 y= 12.5 3 4 print 'the rabbit is %d',x 5 print 'the rabbit is %d years old',x 6 print '%f is average',y 7 print '%f * %d' %(y,x) 8 print '%f * %d is %f' %(y, x, y*x)
4~6行是输出格式化，7~8行为多个输出格式化
下面是结果
1 the rabbit is %d 4 2 the rabbit is %d years old 4 3 %f is average 12.5 4 12.500000 * 4 5 12.500000 * 4 is 50.000000
然后有两个问题：
1、为什么python中字符串乘负数会为空字符串而不报错？
2、如何输出格式化使%8，打印出0008？
