使用 Python 遍歷目錄

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我需要遍歷給定目錄的子目錄並蒐索文件。如果我得到一個文件,我必須打開它並更改內容並用我自己的行替換它。

我試過這個:

import os rootdir ="C: /Users/sid/Desktop/test" 用於 os.walk(rootdir) 中的子目錄、目錄和文件: 對於文件中的文件: f=open(file,"r") lines=f.readlines() f.close() f=open(file,"w") for line in lines: newline = "No you are not" f.write(newline) f.close() 

但我得到一個錯誤。我究竟做錯了什麼?

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