如何在PyQT中定位动态创建的小部件

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

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

    def initUI(self):
        self.setWindowTitle('Dynamic Widget Positioning')
        layout = QVBoxLayout()
        self.setLayout(layout)

        # 创建动态小部件
        button1 = QPushButton('Button 1')
        button1.setObjectName('button1')
        layout.addWidget(button1)

        button2 = QPushButton('Button 2')
        button2.setObjectName('button2')
        layout.addWidget(button2)

        # 定位动态小部件
        button1 = self.findChild(QPushButton, 'button1')
        if button1:
            button1.setText('Updated Button 1')

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