AttributeError: 'MainWindow' object has no attribute 'Region_comboBox'

[LT-K101]

I don't know what I'm doing wrong here. I have sat behind this the whole time trying to figure out this error. Please any assistance would help.Thanks

class MainWindow(QtWidgets.QMainWindow):

    def __init__(self):

        super(MainWindow, self).__init__()
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)

        self.model = QtGui.QStandardItemModel()

        self.Region_comboBox.setModel(self.model)
        self.District_comboBox.setModel(self.model)

        data = {
            "A": ["a1", "a2"],
            "B": ["b1", "b2"],
            "C": ["c1", "c2"],
            "D": ["D1", "D2"]
        }

        # add data
        for k, v in data.items():
            region = QStandardItem()
            self.model.appendRow(region)
            for value in v:
                district = QStandardItem()
                region.append(district)

        self.Region_comboBox.currentIndexChanged.connect(self.updateRegionCombo)
        self.updateRegionCombo(0)

    def updateRegionCombo(self, index):
        indx = self.model.index(index, 0, self.Region_comboBox.rootModelIndex())
        self.District_comboBox.setRootModelIndex(indx)
        self.District_comboBox.setCurrentIndex(0)

[JonB]

@LT-K101 said in AttributeError: 'MainWindow' object has no attribute 'Region_comboBox':

self.Region_comboBox.setModel(self.model)

Exactly what the error messages tells you. You have never set any self.Region_comboBox.

[eyllanesc]

@LT-K101 Change self.Region_comboBox to self.ui.Region_comboBox, and self.District_comboBox to self.ui.District_comboBox.

[LT-K101]

@eyllanesc Thanks a lot it worked perfectly