from pyHook import GetKeyState, HookManager, HookConstants
import pythoncom

def onKeyboardEvent(event):
    print repr(event), event.KeyID, HookConstants.IDToName(event.KeyID), event.ScanCode , event.Ascii, event.flags
    if (GetKeyState(HookConstants.VKeyToID('VK_LSHIFT')) or GetKeyState(HookConstants.VKeyToID('VK_RSHIFT'))) and event.KeyID == HookConstants.VKeyToID('VK_SNAPSHOT'):
        print "shift + snapshot pressed"
    elif (GetKeyState(HookConstants.VKeyToID('VK_LWIN')) or GetKeyState(HookConstants.VKeyToID('VK_RWIN'))) and event.KeyID == HookConstants.VKeyToID('VK_SNAPSHOT'):
        print "win + snapshot pressed"
    elif GetKeyState(HookConstants.VKeyToID('VK_CONTROL')) and HookConstants.IDToName(event.KeyID) == 'D':
        print "ctrl + d pressed"
    return True

hm = HookManager()
hm.KeyDown = onKeyboardEvent
hm.HookKeyboard()
pythoncom.PumpMessages()

<pyHook.HookManager.KeyboardEvent object at 0x01580810> 160 Lshift 42 0 0
<pyHook.HookManager.KeyboardEvent object at 0x01580810> 44 Snapshot 55 0 1
shift + snapshot pressed

<pyHook.HookManager.KeyboardEvent object at 0x01580810> 91 Lwin 91 0 1
<pyHook.HookManager.KeyboardEvent object at 0x01580810> 44 Snapshot 55 0 1