decorator情景一

__author__ = 'bruce'

class Entry_Exit(object):

        def __init__(self,f):

              self.f = f

        def __call__(self):

               print "Enter " ,self.f.__name__

               self.f()

               print 'Exit' ,self.f.__name__

def Entry_Exit_Func(f):

       def new_func():

             print "Enter_function_decorator ",f.__name__

             f()

             print "Exit_function_decorator" ,f.__name__

       return new_func

@Entry_Exit

@Entry_Exit_Func

def func1():

      print "inside func1()"

@Entry_Exit

@Entry_Exit_Func

 def func2():

        print "inside func2()"

if __name__ == '__main__':

       func1()

       func2()

---

Enter  new_func

Enter_function_decorator  func1

inside func1()

Exit_function_decorator func1

Exit new_func

Enter  new_func

Enter_function_decorator  func2

inside func2()

Exit_function_decorator func2

Exit new_func