def __missing__(self, key):
        if self.default_factory is None:
            raise KeyError(key)
        else:
            ret = self[key] = self.default_factory(name=key)
            return ret
def on_remove_duplicates_state_changed(self):
        self.fuzz_table_model.remove_duplicates = self.ui.chkBRemoveDuplicates.isChecked()
        self.fuzz_table_model.update()
        self.remove_duplicates()