def setPos(self, pos):
    print('from %s to %s' % (self.scenePos(), pos))
    timer = QTimeLine(5000)
    timer.setFrameRange(0, 100)
    animation = QGraphicsItemAnimation()
    animation.setItem(self)
    animation.setTimeLine(timer)
    x_step = (pos - self.scenePos()).x() / 200
    y_step = (pos - self.scenePos()).y() / 200
    for i in range(200):
        animation.setPosAt(i/200, self.scenePos() + QPointF(i * x_step, i * y_step))
    timer.start()

QPropertyAnimation * animationPos = new QPropertyAnimation(Object, propertyName);

  animationPos->setDuration(miliseconds);
  animationPos->setStarValue(startValueForProperty);
  animationsPos->setEndValue(endValueForProperty);