如何在PyQT中制作依赖列表？

Question

任务是在ComboBox中创建依赖列表。如果我在

UiComponents

的第一个列表中选择推杆，那么第二个列表应从列表

geek_list1

中选择项目，如果我选择第二个项目，则从

geek_list2

中选择项目。

但这并没有发生，并且

UiComponents2

未填充。

如何在 PyQT ComboBox 中创建依赖列表有任何变体吗？

我的代码。

from PyQt5.QtWidgets import *
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import sys


class Window(QMainWindow):

def __init__(self):
    super().__init__()

    # setting title
    self.setWindowTitle("Python ")

    # setting geometry
    self.setGeometry(100, 100, 600, 400)

    # calling method
    self.UiComponents()
    self.UiComponents2()

    # showing all the widgets
    self.show()

# method for widgets
def UiComponents(self):
    # creating a combo box widget
    combo_box = QComboBox(self)

    # setting geometry of combo box
    combo_box.setGeometry(200, 100, 120, 30)

    # geek list
    geek_list = ["Geek", "Geeky Geek", "Legend Geek", "Ultra Legend Geek"]

    # adding list of items to combo box
    combo_box.addItems(geek_list)

def UiComponents2(self):
    # creating a combo box widget
    combo_box = QComboBox(self)

    # setting geometry of combo box
    combo_box.setGeometry(200, 150, 120, 30)

    # geek list
    geek_list1 = ["Geek1", "Geeky Geek1", "Legend Geek1", "Ultra Legend Geek1"]
    geek_list2 = ["Geek2", "Geeky Geek2", "Legend Geek2", "Ultra Legend Geek2"]

    # adding list of items to combo box
    if self.UiComponents() == "Geek":
        combo_box.addItems(geek_list1)

    if self.UiComponents() == "Geeky Geek":
        combo_box.addItems(geek_list2)



# create pyqt5 app
App = QApplication(sys.argv)

# create the instance of our Window
window = Window()

# start the app
sys.exit(App.exec())`

我尝试通过

if self.UiComponents()

条件进行操作，但是

UiComponents2

看不到做出了哪个选择。

Answer 1

借助字典解决了我的问题。也许有人会发现它有用。

from PyQt6 import QtCore, QtGui, QtWidgets
from PyQt6.QtGui import QStandardItemModel, QStandardItem, QFont


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(693, 220)
        self.centralwidget = QtWidgets.QWidget(parent=MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.MainComboBox = QtWidgets.QComboBox(parent=self.centralwidget)
        self.MainComboBox.setGeometry(QtCore.QRect(30, 30, 211, 41))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.MainComboBox.setFont(font)
        self.MainComboBox.setObjectName("MainComboBox")
        self.OfComboBox = QtWidgets.QComboBox(parent=self.centralwidget)
        self.OfComboBox.setGeometry(QtCore.QRect(150, 90, 261, 41))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.OfComboBox.setFont(font)
        self.OfComboBox.setObjectName("OfComboBox")
        self.pushButton = QtWidgets.QPushButton(parent=self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(460, 80, 221, 51))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.pushButton.setFont(font)
        self.pushButton.setStyleSheet("background-color: rgb(255, 170, 127);")
        self.pushButton.setObjectName("pushButton")
        self.label = QtWidgets.QLabel(parent=self.centralwidget)
        self.label.setGeometry(QtCore.QRect(6, 152, 681, 61))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.label.setFont(font)
        self.label.setObjectName("label")
        MainWindow.setCentralWidget(self.centralwidget)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "TestComboBox"))
        self.pushButton.setText(_translate("MainWindow", "Choice"))
        self.label.setText(_translate("MainWindow", "TextLabel"))

class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self):
        super(MainWindow, self).__init__()

        self.setupUi(self)

        layout = QtWidgets.QVBoxLayout(self.centralwidget)
        layout.addWidget(self.label)

        # add button
        layout.addWidget(self.pushButton)
        self.pushButton.clicked.connect(self.item_label)

        self.model = QStandardItemModel()

        # add ComboBox
        self.MainComboBox.setFixedSize(210, 40)
        font = QtGui.QFont()
        font.setPointSize(16)
        self.MainComboBox.setFont(font)
        self.MainComboBox.setObjectName("MainComboBox")
        self.MainComboBox.setModel(self.model)

        self.OfComboBox.setFixedSize(210, 40)
        font = QtGui.QFont()
        font.setPointSize(16)
        self.OfComboBox.setFont(font)
        self.OfComboBox.setObjectName("OfComboBox")
        self.OfComboBox.setModel(self.model)

        # add data
        for k, v in data.items():
            state = QStandardItem(k)
            self.model.appendRow(state)
            for value in v:
                city = QStandardItem(value)
                state.appendRow(city)

        self.MainComboBox.currentIndexChanged.connect(self.updateItemCombo)
        self.updateItemCombo(0)

        # add ComboBox in Wiget
        layout.addWidget(self.MainComboBox)
        layout.addWidget(self.OfComboBox)
        self.setLayout(layout)

    def updateItemCombo(self, index):
        indx = self.model.index(index, 0, self.MainComboBox.rootModelIndex())
        self.OfComboBox.setRootModelIndex(indx)
        self.OfComboBox.setCurrentIndex(0)

    def item_label(self):
        text_label = self.MainComboBox.currentText()
        text_label2 = self.OfComboBox.currentText()
        self.label.setText(text_label + ' ' + text_label2)

data = {
    'item 1': ['item 1.1', 'item 1.2', 'item 1.3'],
    'item 2': ['item 2.1', 'item 2.2', 'item 2.3'],
    'item 3': ['item 3.1', 'item 3.2', 'item 3.3']
}




if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    w = MainWindow()
    w.show()
    sys.exit(app.exec())