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Python正则表达式七种兵器
source link: http://down.51cto.com/data/2448431
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正则表达式并不是Python的一部分。正则表达式是用于处理字符串的强大工具，拥有自己独特的语法以及一个独立的处理引擎，效率上可能不如str自带的方法，但功能十分强大。得益于这一点，在提供了正则表达式的语言里，正则表达式..
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