pytony格式化输出-占位符

1. %s　　s = string　　字符串

2. %d　　d = digit　　整数

3. %f　　f = float　　浮点数

#!/usr/bin/env python

#_*_coding:utf-8_*_

#date: 2018/1/13

#_author_="dingkai"

name = input("your name:")

age = input("your age:")

if age.isdigit():   #像不像数字

    int(age)

else:

    print('age must be int!')

    exit(1) #退出程序

salary = input("your salary:")

if salary.isdigit():  #像不像数字

    int(salary)

else:

    print('salary must be int!')

    exit(1) #退出程序

msg_info = '''

------info of %s ------

name:   %s

age:    %s

salary: %s

------end------

''' %(name,name,age,salary)

print(msg_info)