in zktraffic/cli/printer.py [0:0]
def __init__(self, colors, output=sys.stdout, skip_print=None):
super(Printer, self).__init__()
self.setDaemon(True)
self._queue = deque()
self._print = self._print_color if colors else self._print_default
self._output = output
self._stopped = True
self._wants_stopped = False
self._skip_print = skip_print # a callable that takes msg and returns a bool
self.start()