<p>出现此错误的原因是,在尝试访问选择模型之前,没有在表上设置模型。解决此问题的最佳方法是将模型设置代码移出<code>on_open_file</code>,然后移到<code>setupUi</code>。然后,<code>on_open_file</code>只需在重新加载数据之前清除模型。在</p>
<p>下面是你的例子的重述。请注意,为了让它正常工作,我不得不修改很多其他的东西(主要是中心小部件和布局)。在</p>
<pre><code>import sys, random
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_ReadResultWindow(object):
def setupUi(self, ReadResultWindow):
ReadResultWindow.resize(661, 438)
self.tableEntity = QtWidgets.QTableView()
self.model = QtGui.QStandardItemModel()
self.proxy = QtCore.QSortFilterProxyModel()
self.proxy.setSourceModel(self.model)
self.tableEntity.setModel(self.proxy)
self.tableEntity.selectionModel().selectionChanged.connect(
self.change_display_result)
self.Open = QtWidgets.QPushButton('Test')
self.Open.clicked.connect(self.on_open_file)
widget = QtWidgets.QWidget(ReadResultWindow)
layout = QtWidgets.QVBoxLayout(widget)
layout.addWidget(self.tableEntity)
layout.addWidget(self.Open)
ReadResultWindow.setCentralWidget(widget)
def on_open_file(self):
self.model.setRowCount(0)
x = random.sample(range(10, 100), 10)
for item in x:
self.model.invisibleRootItem().appendRow(
QtGui.QStandardItem(str(item)))
self.tableEntity.resizeColumnsToContents()
def change_display_result(self,selected,deselected):
index_entity = self.tableEntity.selectionModel().selectedIndexes()
temp_entity = self.tableEntity.selectionModel().model()
for index in sorted(index_entity):
print(str(temp_entity.data(index)))
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
ReadResultWindow = QtWidgets.QMainWindow()
ui = Ui_ReadResultWindow()
ui.setupUi(ReadResultWindow)
ReadResultWindow.show()
sys.exit(app.exec_())
</code></pre>