Pyside2我如何移动盒子？

Question

如果要移动鼠标左键，我想移动SimpleItem对象。如果按下对象，我已经成功获取了鼠标光标的位置。但是我不知道如何将物品移动到那个位置。你能帮我吗？

import sys
from PySide2 import QtGui, QtWidgets, QtCore


class SimpleItem(QtWidgets.QGraphicsItem):
    def __init__(self):
        QtWidgets.QGraphicsItem.__init__(self)
        self.location = 1.0

    def boundingRect(self):
        penWidth = 1.0
        return QtCore.QRectF(-10 - penWidth / 2, -10 - penWidth / 2,
                      20 + penWidth, 20 + penWidth)

    def paint(self, painter, option, widget):
        rect = self.boundingRect()
        painter.drawRect(rect)

    def mousePressEvent(self, event):
        print("hello")

    def mouseMoveEvent(self, event):
        print(event.pos())


if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    scene = QtWidgets.QGraphicsScene()
    item = SimpleItem()
    scene.addItem(item)
    view = QtWidgets.QGraphicsView(scene)
    view.show()
    sys.exit(app.exec_())