占位符的使用%s,%d,%f和format

name = input("name:")
#raw_input 2.x   input 3.x
#input 2.x =
age = int(input("age:") ) #integer
print(type(age)   , type(  str(age) ))
job = input("job:")
salary  = input("salary:")

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

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

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