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Recipe 2.25. Changing File Attributes on Windows
Credit: John
Nielsen
Problem
You need to set the attributes of a file on Windows; for example, you
may need to set the file as read-only, archived, and so on.
Solution
PyWin32''s
win32api module offers a function
SetFileAttributes that makes this task quite
simple:
import win32con, win32api, os
# create a file, just to show how to manipulate it
thefile = ''test''
f = open(''test'', ''w'')
f.close( )
# to make the file hidden...:
win32api.SetFileAttributes(thefile, win32con.FILE_ATTRIBUTE_HIDDEN)
# to make the file readonly:
win32api.SetFileAttributes(thefile, win32con.FILE_ATTRIBUTE_READONLY)
# to be able to delete the file we need to set it back to normal:
win32api.SetFileAttributes(thefile, win32con.FILE_ATTRIBUTE_NORMAL)
# and finally we remove the file we just made
os.remove(thefile)
Discussion
One interesting use of win32api.SetFileAttributes
is to enable a file''s removal. Removing a file with
os.remove can fail on Windows if the
file''s attributes are not normal. To get around this
problem, you just need to use the Win32 call to
SetFileAttributes to convert it to a normal file,
as shown at the end of this recipe''s Solution. Of
course, this should be done with caution, since there may be a good
reason the file is not "normal".
The file should be removed only if you know what
you''re doing!
See Also
The documentation on the win32file module at
http://ASPN.ActiveState.com/ASPN/Python/Reference/Products/ActivePython/PythonWin32Extensions/win32filel.
