Is it possible to programmatically find a PyQt5 widget in Python3, by name (string value)?

Question

PyQt

I'm quite new to Python. By email books I can't figure out from the ones I have. Or advise how to do it or advise the primer.
The program creates Label groups. At the development stage, it is not known how many there may be.
In a separate class, override Label - clicked = QtCore.pyqtSignal()
In the class that creates "Label groups"

map_ = QtCore.QSignalMapper(self)    # Создаем маппер
self.labelTools.clicked.connect(map_.map)    # Привязываем
map_.setMapping(self.labelTools, int(self.numWin))    # Передаем индекс

#В слоте   -                    
@QtCore.pyqtSlot(int)
def on_click(self, index):
    print(str(index))
    w = QWidget.sender(self)
    print(w.sender().objectName())    # пишет имя Label  
    wp = w.sender().parent()
    print(wp.objectName())    # имя родителя

In the slot, we get the name of the Label and its parent. At a minimum, you need to have access to self. toolButton .setGeometry. But full access to the widget is better, the name of which is displayed in the console by the script.