python - How to traverse all directories in windows install with multiple drives -

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i'm writing script should cross platform (usable laymen without needing edit code).
script traverse through directories on computer , process of files found.
snippet of code in question follows: 

for dirpath, dirnames, filenames in os.walk("/"):     file in filenames:         #process files

so on linux works fine since "/" root directory. however, on windows, "/" translates c:\, means on computer multiple drives (c:\, d:\, e:\ etc) other drives won't processed.

how can make sure files on drives processed in both windows , linux 1 script?

thanks

maybe (untested) example checks drives if machine not linux platform:

import sys if sys.platform == "linux" or sys.platform == "linux2":     drives = ['/'] else:     # http://nullege.com/codes/search/win32api.getlogicaldrivestrings     import win32api     drives = win32api.getlogicaldrivestrings()     drives = drives = drives.split('\000')[:-1]  drive in drives:     dirpath, dirnames, filenames in os.walk(drive):         # ...         pass

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