vbox python script to clone vm

vbox.py

def cloneVm(ctx, srcname, newname):
    vbox = ctx['vb']
    clonemode = ctx['const'].all_values('CloneMode')
    sourcevm = vbox.findMachine(srcname)
    mach = vbox.createMachine("", newname, [], sourcevm.OSTypeId, "")
    clone = sourcevm.cloneTo(mach, clonemode['MachineState'], "")
    mach.saveSettings()
    print "created clone of machine with UUID", mach.id
    vbox.registerMachine(mach)
    # update cache
    getMachines(ctx, True)