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一、Python System Modules：

 . Sys与Os是python系统工具的核心，很多标准模块是从他们，原则上，sys导出与Python解释器相关的部件（例如模块的搜索路径），而os则包含了Python所运行的平台上的函数以及变量的映射。但这种界限比较模糊，例如标准的输入输出流是在Sys中的，它们明显是要和平台紧密联系的。

xiaobolee (last edited 2009-12-25 07:08:41 by localhost)

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