import System
from System.Reflection import BindingFlags
from System.Runtime.InteropServices import Marshal

objType = System.Type.GetTypeFromProgID("Shell.Application")
shell = System.Activator.CreateInstance(objType)
param = System.Array[System.Object]([ 0, "Hello, COM(IronPython) World!", 0, 36 ])
folder = shell.GetType().InvokeMember( "BrowseForFolder", BindingFlags.InvokeMethod, None, shell, param )
if folder != None:
    Marshal.ReleaseComObject(folder)
Marshal.ReleaseComObject(shell)