如何制作动态组合框PYQT5

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QComboBox, QPushButton, QLabel

class DynamicComboBoxApp(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):
        self.setWindowTitle('Dynamic ComboBox Example')
        self.setGeometry(100, 100, 300, 200)

        layout = QVBoxLayout()

        self.label = QLabel('Selected Item:', self)
        layout.addWidget(self.label)

        self.comboBox = QComboBox(self)
        self.comboBox.addItems(['Option 1', 'Option 2', 'Option 3'])
        layout.addWidget(self.comboBox)

        self.updateButton = QPushButton('Update ComboBox', self)
        self.updateButton.clicked.connect(self.updateComboBox)
        layout.addWidget(self.updateButton)

        self.setLayout(layout)

    def updateComboBox(self):
        # 这里可以根据需要动态改变组合框的内容
        new_items = ['New Option 1', 'New Option 2', 'New Option 3']
        self.comboBox.clear()
        self.comboBox.addItems(new_items)
        self.label.setText(f'Selected Item: {self.comboBox.currentText()}')

if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = DynamicComboBoxApp()
    ex.show()
    sys.exit(app.exec_())