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decorator的class方式

Posted on 2015-10-27 09:50  网名还没想好  阅读(207)  评论(0编辑  收藏  举报

class式的 Decorator

decorator的class方式

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class myDecorator(object):
 
    def __init__(self, fn):
        print "inside myDecorator.__init__()"
        self.fn = fn
 
    def __call__(self):
        self.fn()
        print "inside myDecorator.__call__()"
 
@myDecorator
def aFunction():
    print "inside aFunction()"
 
print "Finished decorating aFunction()"
 
aFunction()
 
# 输出:
# inside myDecorator.__init__()
# Finished decorating aFunction()
# inside aFunction()
# inside myDecorator.__call__()