本文实例讲述了Python过滤列表用法。分享给大家供大家参考,具体如下:
过滤列表
[mapping-expression for element in source-list if filter-expression]
以 if 开头的是过滤器表达式,过滤器表达式可以是返回值为真或者假(在 Python 中是 几乎任何东西)的任何表达式。任何经过滤器表达式演算值为元素的真都可以包含在映射中。其它的元素都将忽略,它们不会进入映射表达式,更不会包含在输出列表中。
>>> li = ["a", "mpilgrim", "foo", "b", "c", "b", "d", "d"] >>> [elem for elem in li if len(elem) > 1] ['mpilgrim', 'foo'] >>> [elem+elem for elem in li if len(elem) > 1] ['mpilgrimmpilgrim', 'foofoo'] >>>
更多关于Python相关内容可查看本站专题:《Python正则表达式用法总结》、《Python数据结构与算法教程》、《Python Socket编程技巧总结》、《Python函数使用技巧总结》、《Python字符串操作技巧汇总》、《Python入门与进阶经典教程》及《Python文件与目录操作技巧汇总》
希望本文所述对大家Python程序设计有所帮助。

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