QAccessibleTable:：child:空目录中的索引QTableView和QFileSystemMod无效

Question

当导航到一个空目录时，我收到了以下关于无效索引的控制台垃圾邮件。根据双击父目录的哪一列以访问空目录，我得到的消息略有不同。在进入空目录后单击表中的任意位置时，双击Name列会导致第一组垃圾邮件（1 0）。如果双击其他列，则会出现11、12、13消息。你知道吗

QAccessibleTable::child: Invalid index at: 1 0
Cannot creat accessible child interface for object:  QTableView(0x5651e6c1edd0)  index:  11
QAccessibleTable::child: Invalid index at: 1 0
Cannot creat accessible child interface for object:  QTableView(0x5651e6c1edd0)  index:  11
QAccessibleTable::child: Invalid index at: 1 0
Cannot creat accessible child interface for object:  QTableView(0x5651e6c1edd0)  index:  11

QAccessibleTable::child: Invalid index at: 1 1
Cannot creat accessible child interface for object:  QTableView(0x5651e6c1edd0)  index:  12
QAccessibleTable::child: Invalid index at: 1 1
Cannot creat accessible child interface for object:  QTableView(0x5651e6c1edd0)  index:  12
QAccessibleTable::child: Invalid index at: 1 1
Cannot creat accessible child interface for object:  QTableView(0x5651e6c1edd0)  index:  12

QAccessibleTable::child: Invalid index at: 1 2
Cannot creat accessible child interface for object:  QTableView(0x5651e6c1edd0)  index:  13
QAccessibleTable::child: Invalid index at: 1 2
Cannot creat accessible child interface for object:  QTableView(0x5651e6c1edd0)  index:  13
QAccessibleTable::child: Invalid index at: 1 2
Cannot creat accessible child interface for object:  QTableView(0x5651e6c1edd0)  index:  13

QAccessibleTable::child: Invalid index at: 1 3
Cannot creat accessible child interface for object:  QTableView(0x5651e6c1edd0)  index:  14
QAccessibleTable::child: Invalid index at: 1 3
Cannot creat accessible child interface for object:  QTableView(0x5651e6c1edd0)  index:  14
QAccessibleTable::child: Invalid index at: 1 3
Cannot creat accessible child interface for object:  QTableView(0x5651e6c1edd0)  index:  14

我试过移动setRootIndex（）调用的位置，但没用。还有别的事情要做吗？你知道吗

这段代码似乎可以工作，但我以前遇到过与此垃圾邮件相关的随机崩溃（PyQt5 Crash with QFileSystemModel and QSortFilterProxyModel..doing something wrong?）。你知道吗

import os, sys, tempfile
from PyQt5 import QtCore, QtWidgets
print(QtCore.qVersion())

class Widget(QtWidgets.QWidget):
    def __init__(self, parent=None):
        QtWidgets.QWidget.__init__(self, parent)

        layout = QtWidgets.QVBoxLayout()
        self.setLayout(layout)
        self._view = QtWidgets.QTableView()
        layout.addWidget(self._view)

        self._model = QtWidgets.QFileSystemModel()
        self._model.setFilter(QtCore.QDir.AllDirs | QtCore.QDir.NoDot)

        self._view.setModel(self._model)
        self._view.doubleClicked.connect(self._double_clicked)

        # Create a temporary directory structure (tmpxyz/foo) starting at the location of this file
        path = os.path.dirname(os.path.abspath(__file__))
        self.temp_dir = tempfile.TemporaryDirectory(dir=path)
        print('created temporary directory', self.temp_dir.name)
        foo_dir = os.path.join(self.temp_dir.name, 'foo')
        os.mkdir(foo_dir)

        self.parentIndex = self._model.setRootPath(foo_dir)
        # self._set_view_root(self.parentIndex) # Same spam whether called here or deferred to _loaded

        self._model.directoryLoaded.connect(self._loaded)

    def _set_view_root(self, source_index):
        self._view.setRootIndex(source_index)

    def _loaded(self):
        path = self._model.rootPath()
        source_index = self._model.index(path)
        self._set_view_root(source_index)
        print('_loaded', path, self._model.rowCount(self.parentIndex))

    def _double_clicked(self, index):
        info = self._model.fileInfo(index)
        absolute_path = info.absoluteFilePath()
        print('_double_clicked', absolute_path)
        if info.isDir():
            self.parentIndex = self._model.setRootPath(absolute_path)
            # self._set_view_root(self.parentIndex)


if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    widget = Widget()
    widget.show()
    sys.exit(app.exec_())

我在一个干净的虚拟环境中使用了Ubuntu 17.04上的Python3.6.1，PyQt5==5.8.2，但是在基本的Ubuntu上，我得到了与Python3.5.3和PyQt5.7.1相同的行为。你知道吗

Answer 1

升级到pyqt5.9似乎解决了这个问题。你知道吗