%d,%s

%d数字占位符。

%s字符串占位符。

 

 

"Hello, %s"%"zhang3" => "Hello, zhang3"

"%d"3 => "33"

"%s:%d"%("ab",3) => "ab:3"

 

m=input("请输入月份")

sum=2

if m % 2 == 0:

    for i in range(0,m-1,2):

       sum=sum+2*i

if m % 2 == 1:

    for i in range(1,m-1,2):

       sum=sum+2*i

print ("当月兔子的总数是：%d"%sum)

 

https://blog.csdn.net/youngys123/article/details/80090211

https://www.jianshu.com/p/7fc0a177fd1f