字符串格式化输出

用户输入姓名、年龄、职业、工资后打印信息：

%s 代表字符串 string

%d 代表整数 digit

%f 代表浮点数 flloat

name = input("Name:")
age = int(input("Age:"))
job = input("Job:")
salary = input("Salary:")

if salary.isdigit(): #判断长得像不像数字
    salary = int(salary)
else:
    print("You must input digit.")
    exit()   #退出程序

print(name, age, job, salary)

msg = '''
-------------info of %s-----------
Name: %s
Age: %d
Job: %s
Salary:%f
You will be retired in %s year
-------------end-------------
'''%(name, name, age, job, salary, 65-age)
print(msg)