QRadioButton:将组中的所有单选按钮设置为未选中状态

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QRadioButton, QButtonGroup

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

    def initUI(self):
        layout = QVBoxLayout()

        self.button_group = QButtonGroup()
        self.radio1 = QRadioButton("Option 1")
        self.radio2 = QRadioButton("Option 2")
        self.radio3 = QRadioButton("Option 3")

        self.button_group.addButton(self.radio1)
        self.button_group.addButton(self.radio2)
        self.button_group.addButton(self.radio3)

        layout.addWidget(self.radio1)
        layout.addWidget(self.radio2)
        layout.addWidget(self.radio3)

        self.setLayout(layout)

        # 设置所有单选按钮为未选中状态
        self.unselectAllRadioButtons()

    def unselectAllRadioButtons(self):
        for button in self.button_group.buttons():
            button.setChecked(False)

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