from timeseriesviewer.ui.docks import TsvDockWidgetBase, load class LabelingDockUI(TsvDockWidgetBase, load('labelingdock.ui')): def __init__(self, parent=None): super(LabelingDockUI, self).__init__(parent) self.setupUi(self) self.btnClearLabelList.clicked.connect(self.tbCollectedLabels.clear)