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[root@node110 decorator]# cat temp_decorator.py

#!/usr/bin/env python

import time

def time_counter(func):

  def wrapper():

    start =time.time()

    func()

    end =time.time()

    print 'Thisfunction costs:',end-start

  return wrapper

 

 

#sayhi=time_counter(sayhi)

#sayhi()

@time_counter   

#相当于sayhi=time_counter(sayhi)

#sayhi()

 

def sayhi():

  print 'hi yoursister...'

  time.sleep(0.1)

 

@time_counter

def tellyoursalary():

  print 'Allenmakes 25k per month...'

 

sayhi()

tellyoursalary()