Python windows native console ctrl+c callback

ctrlc.py

from ctypes import wintypes as w
import ctypes as c


def handler( *args ):
    print( 'Native console ctrl handler call:' , args )
    return 0


HandlerRoutineType = c.WINFUNCTYPE( w.BOOL , w.DWORD )
SetConsoleCtrlHandler = c.windll.kernel32.SetConsoleCtrlHandler
SetConsoleCtrlHandler.argtypes = (HandlerRoutineType , w.BOOL)
SetConsoleCtrlHandler.restype = w.BOOL

chandler = HandlerRoutineType( handler )
retval = SetConsoleCtrlHandler( chandler , 1 )


def test():
    n = 0
    import time
    
    print( 'ignoring default python keyboarditerrupt. so to quit this program hit CTRL C 3 times' )
    
    while True:
        try:
            time.sleep( .001 )
        except KeyboardInterrupt as e:
            if n >= 3:
                break
            n += 1
            


if __name__ == '__main__':
    test()