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/********************************************************************************* * Python Decorator * 说明: * 最近要处理markdown文档,想使用mkdocs来做实时修改显示,但其界面的pages设定 * 总让我这边不是很舒服,不能隐藏,所以打算看一下其源代码,看能不能隐藏,先学习 * 一下Python修饰器的语法,原因是源代码里面用到了修饰器。 * * 2016-8-30 深圳 南山平山村 曾剑锋 *********************************************************************************/ 一、参考文档: 1. A guide to Python‘s function decorators http://thecodeship.com/patterns/guide-to-python-function-decorators/ 2. Python天天美味(34) - Decorators详解 http://www.cnblogs.com/coderzh/archive/2010/04/27/python-cookbook33-decorators.html 3. Python Decorator的来龙 https://segmentfault.com/a/1190000003719779 4. 装饰器 http://www.liaoxuefeng.com/wiki/001374738125095c955c1e6d8bb493182103fac9270762a000/001386819879946007bbf6ad052463ab18034f0254bf355000 二、示例1: def p_decorate(func): def func_wrapper(name): return "<p>{0}</p>".format(func(name)) return func_wrapper @p_decorate def get_text(name): return "lorem ipsum, {0} dolor sit amet".format(name) print get_text("John") # Outputs <p>lorem ipsum, John dolor sit amet</p> 三、示例2: from functools import wraps def tags(tag_name): def tags_decorator(func): @wraps(func) def func_wrapper(name): return "<{0}>{1}</{0}>".format(tag_name, func(name)) return func_wrapper return tags_decorator @tags("p") def get_text(name): """returns some text""" return "Hello "+name print get_text.__name__ # get_text print get_text.__doc__ # returns some text print get_text.__module__ # __main__
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原文地址:http://www.cnblogs.com/zengjfgit/p/5820430.html