python 修饰符（转载）

 1 #!/usr/bin/env python  
 2   
 3 def run(fn):  
 4     def do_hello():  
 5         print "begin..."  
 6         fn()  
 7         print "end."  
 8     return do_hello  
 9   
10 @run  
11 def hello():  
12     print "Hello World!"  
13   
14 if __name__ == '__main__':  
15     hello() 

 1 class entryExit(object):  
 2   
 3     def __init__(self, f):  
 4         self.f = f  
 5   
 6     def __call__(self):  
 7         print "Entering", self.f.__name__  
 8         self.f()  
 9         print "Exited", self.f.__name__  
10  
11 @entryExit  
12 def func1():  
13     print "inside func1()"  
14  
15 @entryExit  
16 def func2():  
17     print "inside func2()"