Behaviour of os.rename()

Tim Golden mail at timgolden.me.uk
Wed Mar 11 15:20:21 CET 2009


venutaurus539 at gmail.com wrote:
> Hello all,
>             I got a suspicion on the behaviour of os.rename
> (src,dst).If the src is the path of a file and dst is a new filename
> this os.rename() function is infact creating a new file with the dst
> name in the current working directory and leaving the src as it is. Is
> this the expected behavior? If i want the actual source file in its
> orignal location to be renamed without doing os.chdir() to that
> directory, is that possible?
> 
> Ex: if my script ren.py contains the following code:
> 
> os.rename("C:\\Folder1\\Folder2\\file1,file2)
> 
>               and my ren.py is in the folder D:\. Now if I run this
> script, it is creating file2 in D:\ but I want it in C:
> \Folder1\Folder2. is that possible?
> 
>             When I checked the normal Windows rename function, it is
> working to my expectations but I can't use it because my file is in a
> deep path (>255) which Windows won't support.

os.rename on windows calls the Windows MoveFile API:

  http://msdn.microsoft.com/en-us/library/aa365239(VS.85).aspx

Have a look at the details on that page to see what
the limitations / actions are. But remember -- as I've
indicated elsewhere -- to use the ur"\\?\c:\..." form
of the file names.

And let us know if that works :)

TJG



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