Python装饰器与面向切面编程
http://www.cnblogs.com/huxi/archive/2011/03/01/1967600.html
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http://www.cnblogs.com/wupeiqi/articles/4980620.html
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http://www.cnblogs.com/wilber2013/p/4657155.html
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http://www.cnblogs.com/rhcad/archive/2011/12/21/2295507.html
http://www.cnblogs.com/Jerry-Chou/archive/2012/05/23/python-decorator-explain.html