def init_prefilter(self):
    self.prefilter_manager = PrefilterManager(shell=self, parent=self)
    self.configurables.append(self.prefilter_manager)
    self.prefilter = self.prefilter_manager.prefilter_lines
def init_prefilter(self):
    self.prefilter_manager = PrefilterManager(shell=self, parent=self)
    self.configurables.append(self.prefilter_manager)
    self.prefilter = self.prefilter_manager.prefilter_lines