使用python PyQt5删除按钮(如果存在

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

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

    def initUI(self):
        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('Delete Button Example')

        deleteButton = QPushButton('Delete', self)
        deleteButton.clicked.connect(self.deleteButtonClicked)
        deleteButton.setGeometry(100, 100, 100, 30)

    def deleteButtonClicked(self):
        reply = QMessageBox.question(self, 'Message', 'Are you sure to delete?', QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
        if reply == QMessageBox.Yes:
            # Perform delete operation here
            print('Delete button clicked')

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