如何按检查对象对QStandardItemModel和QListView进行排序？

Question

我想按选中的对象对ListView模型进行排序。在下面的示例中，我尝试添加一个self.model.sort()，但它似乎没有任何作用，除了Qt.AscendingOrder （最近向我透露了此内容）。

documentation说：“您可以使用findItems（）搜索模型中的项目，然后通过调用sort（）来对模型进行排序”，但实际上只有self.model.sort(QtCore.Qt.DescendingOrder)才有效。

我误会了吗？

下面的GUI设置为在设置的时间后启动print_checked_items()中的任何代码。

from PyQt5 import QtCore
from PyQt5 import QtGui
from PyQt5.QtCore import QTimer
from PyQt5.QtWidgets import QApplication, QWizardPage, QListView


class AppRemovalPage(QWizardPage):
    def __init__( self, parent ):
        super(AppRemovalPage, self).__init__(parent)
        self.list_view = QListView(self)
        self.model = QtGui.QStandardItemModel(self.list_view)

        for line in ('a', 'b', 'c', 'd', 'e'):
            self.item = QtGui.QStandardItem(line)
            self.item.setCheckable(True)
            self.item.setCheckState(QtCore.Qt.Unchecked)
            self.model.appendRow(self.item)

        self.list_view.setModel(self.model)
        self.list_view.clicked.connect(self.getSelectedListItem)
        self.list_view.show()


    def print_checked_items(self):
        self.model.sort(QtCore.Qt.AscendingOrder) # has no effect

        for index in range(self.model.rowCount()):
            item = self.model.item(index)
            if item.checkState() == QtCore.Qt.Checked:
                print(item.text(), "was checked")
        print("rerun timed script to list checked objects again")


    def getSelectedListItem(self):
        currentSelection = self.list_view.selectedIndexes()

        name  = None
        row   = None
        index = None

        # Set name for currently selected object in listview
        for obj_index in currentSelection:
            item  = self.model.itemFromIndex(obj_index)
            row   = item.row()
            index = self.model.index(row, 0)
            name  = self.model.data(index)

        self.currName  = name
        self.currRow   = row
        self.currIndx  = index


app = QApplication([])
listview = AppRemovalPage(None)
listview.show()
QTimer.singleShot(4000, listview.print_checked_items)
app.exec_()