def checkQueue(self):
    if not self.queue:
      self.queueEmpty.callback(0)
      self.queueEmpty = Deferred()
Removes the widget's keyboard handler.
dataset/ETHPy150Open graphite-project/carbon/lib/carbon/client.py/CarbonClientFactory.checkQueue--crossover with--dataset/ETHPy150Open qtile/qtile/libqtile/bar.py/Bar.widget_ungrab_keyboard