title: Is there a way to list all the available Windows' drives?
body: <p>Is there a way in Python to list all the currently in-use drive letters in a Windows system?</p>
  <p>(My Google-fu seems to have let me down on this one)</p>
  <p>A <code>C++</code> equivalent: <a href="https://stackoverflow.com/questions/286534/enumerating-all-available-drive-letters-in-windows">Enumerating all available drive letters in Windows</a></p>