如何更新自定义视图类中的所有背景图像

from PyQt5.QtWidgets import QWidget, QVBoxLayout, QLabel
from PyQt5.QtGui import QPixmap

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

    def initUI(self):
        layout = QVBoxLayout()
        self.setLayout(layout)

        self.background_label = QLabel()
        layout.addWidget(self.background_label)

    def updateBackgroundImage(self, image_path):
        pixmap = QPixmap(image_path)
        self.background_label.setPixmap(pixmap)

# 在其他地方调用自定义视图类并更新背景图像
custom_view = CustomView()
custom_view.updateBackgroundImage("path/to/image.jpg")