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class MyEventFilter(QObject):

    enterPressed = pyqtSignal()

    def __init__(self):
        QObject.__init__(self)

    def keyPressEvent(self, event): #QKeyEvent
        if event.key() == Qt.Key_Enter or event.key() == Qt.Key_Return:
            self.enterPressed.emit()
            print('enter key pressed')


class MyWindow(QWidget):
    def __init__(self, dataList, header, *args):
        QWidget.__init__(self, *args)
        # setGeometry(x_pos, y_pos, width, height)
        self.setGeometry(70, 150, 420, 250)
        self.setWindowTitle("Click on the header to sort table")
        self.filter = MyEventFilter()
        self.installEventFilter(self.filter)

        self.table_model = MyTableModel(self, dataList, header)
        
        table_view = QTableView()
        
        # bind cell click to a method reference
        table_view.pressed.connect(self.showSelection)

        table_view.setModel(self.table_model)
        # enable sorting
        table_view.setSortingEnabled(True)

        layout = QVBoxLayout(self)
        layout.addWidget(table_view)
        self.setLayout(layout)

    def showSelection(self, item):
        cellContent = item.data()
        sf = "You clicked on {}".format(cellContent)
        # display in title bar for convenience
        self.setWindowTitle(sf)