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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def is_mouse_over(self, event):
 """ Check whether a MouseEvent is over thus scroll bar. :param event: The MouseEvent to check. :returns: True if the mouse event is over the scroll bar. """

        return event.x == self._x and self._y <= event.y < self._y + self._height