finding mount points

[Suchandra Thapa]

    Is there any way to find the mount point of a filesystem given
the path to a file within the file system?  Using os.path.ismount 
lets you determine if a path is a mount point but is there any function
that returns something like /mnt/cdrom if you give it a path like
/mnt/cdrom/foo/bar.txt?

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Suchandra S. Thapa 
s-thapa at uchicago.edu

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