Python：字符串中引用外部变量的3种方法

方法一：

 username=input('username:')
 age=input('age:')
 job=input('job:')
 salary=input('salary')

 info1='''
 -----------------------info of %s----------------------------
 Name:%s
 Age:%s
 Job:%s
 Salary:%s
 ''' %(username,username,age,job,salary)

 print(info1)

方法二：

 username=input('username:')
 age=input('age:')
 job=input('job:')
 salary=input('salary:')

 info2='''
 ---------------------------------info of {_name}------------------
 Name:(_name)
 Age:{_age}
 Job:{_job}
 Salary:{_salary}
 '''.format(_name=username,
               _age=age,
               _job=job,
               _salary=salary)

 print(info2)

方法三:

 username=input('username:')
 age=input('age:')
 job=input('job:')
 salary=input('salary:')

 info3='''
 ---------------------------------info of {0}---------------------
 Name:{0}
 Age:{1}
 Job:{2}
 Salary:{3}
 '''.format(username,age,job,salary)

 print(info3)