pyqt5 enterEvent - self.sender() returns NoneType

Question

I have a button QPushButton - pushButton_menu

What I want to achieve: On button hover I need to run method onMenuButtonHover and print text of the button (need to access the button)

This is my code:

self.pushButton_menu.enterEvent = self.onMenuButtonHover

@pyqtSlot()
    def onMenuButtonHover(self, event):
        button = self.sender()
        print(type(button))

On hover method is called properly, but button is always of type NoneType

When I tried with clicked.connect instead of enterEvent, everything works fine - self.sender() return QPushButton object.

How I can access that QPushButton in method onMenuButtonHover?