problem description

PyQt5, if you want to get the mouse position in the mousePressEvent of QGraphicsScene, no matter where you click, the display is [0. 010. 0]

the environmental background of the problems and what methods you have tried

No similar problem was found on the Internet

related codes

/ / Please paste the code text below (do not replace the code with pictures)

-sharpQGraphicsScene
class CARscene(QtWidgets.QGraphicsScene):
    def __init__(self, parent=None):
        super(CARscene, self).__init__(parent)

    def mousePressEvent(self, QMouseEvent):
        -sharp[0.0, 0.0]
        print([QMouseEvent.pos().x(), QMouseEvent.pos().y()])

-sharpQtDesigner    
class CDataMingQtUi(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self):
    super(CDataMingQtUi, self).__init__()
    self.setupUi(self)

    -sharpCARgraphview QGraphicView
    self.figure = plt.figure()
    self.canvas = FigureCanvas(self.figure)
    self.graph_sence = CARscene()
    self.graph_sence.addWidget(self.canvas)
    self.CARgraphview.setScene(self.graph_sence)
    

what result do you expect? What is the error message actually seen?

expect to show the coordinates of the mouse click
the actual display is [0.0,0.0], which is the value wherever you click