def set_invalid_utime(path):
 try:
  os.utime(path, ((-1), (-100000000000)))
 except (OSError, OverflowError):
  os.utime(path, ((-1), (-1)))

def set_invalid_utime ( path ) : try : os . utime ( path , ( ( - 1 ) , ( - 100000000000 ) ) ) except ( OSError , OverflowError ) : os . utime ( path , ( ( - 1 ) , ( - 1 ) ) )
helper function to set an invalid last modified time .