多年以来的计算机操作系统一向采用桌面模式再配以文件和文件夹，所有的文件都存储在庞大的文件篓子里(硬盘)。
For years, the OS has used the desktop analogy, with folders and files, all stored in a big file cabinet (your hard drive).
考虑到脚本需要处理文件夹和文件，因此您需要导入os模块，因为其中包含各种函数和方法，可帮助您列出文件、读取文件和操作文件夹。
Given that the script needs to deal with folders and files, you need to import the OS module, as it contains various functions and methods that help you list files, read files, and work with folders.
分支操作将保留您正进行分支的文件夹和文件的历史记录，并允许将旧文件中的更改合并到新文件中。
Branching will preserve the history of the folders and files that you are branching and will allow changes to be merged from the old files to the new ones.
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