Cross platform way to list disk drives on Linux, Windows and Mac using Python?

Question

I am using Python2.6. I am trying to list the disk drives that a system may have.

On Windows, it may be something like C:/, D:/, E:/

Answer 1

Eric Smith's answer to use psutil works well for me on Windows, but on OS X, I prefer this:

from os import listdir
listdir('/Volumes')

It gives you back the human readable names that, at least in my case, would be preferable (IE, it gives you Macintosh HD instead of / or /dev/disk0s2.)