首先一个修饰符的实例：

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()

修饰符@也可也可以用多個，先加 @run_b 再加@run

@run

@run_b

def hello():

    print "hello world!"

 

上面的例子是在function中使用修饰符，也可以在class中使用修饰符。

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()"