如何在QStackedWidget中刷新/重新初始化小部件

from PyQt5.QtWidgets import QApplication, QStackedWidget, QWidget, QVBoxLayout, QPushButton, QLabel

class MyWidget(QWidget):
    def __init__(self, text):
        super().__init__()
        layout = QVBoxLayout()
        self.label = QLabel(text)
        layout.addWidget(self.label)
        self.setLayout(layout)

    def update_text(self, new_text):
        self.label.setText(new_text)

class MainWindow(QWidget):
    def __init__(self):
        super().__init__()
        self.stacked_widget = QStackedWidget()
        self.init_ui()

    def init_ui(self):
        self.widget1 = MyWidget("Widget 1")
        self.widget2 = MyWidget("Widget 2")

        self.stacked_widget.addWidget(self.widget1)
        self.stacked_widget.addWidget(self.widget2)

        layout = QVBoxLayout()
        layout.addWidget(self.stacked_widget)

        self.refresh_button = QPushButton("Refresh Widget 1")
        self.refresh_button.clicked.connect(self.refresh_widget1)
        layout.addWidget(self.refresh_button)

        self.setLayout(layout)

    def refresh_widget1(self):
        # 移除并重新添加小部件
        self.stacked_widget.removeWidget(self.widget1)
        self.widget1.deleteLater()
        self.widget1 = MyWidget("Updated Widget 1")
        self.stacked_widget.addWidget(self.widget1)

        # 或者更新小部件内容
        # self.widget1.update_text("Updated Widget 1")

if __name__ == "__main__":
    app = QApplication([])
    window = MainWindow()
    window.show()
    app.exec_()