如何从其他模块更新QProgressbar？

from PyQt5.QtCore import Qt, QObject, pyqtSignal
from PyQt5.QtWidgets import QApplication, QMainWindow, QProgressBar, QPushButton, QVBoxLayout, QWidget

class ProgressBarUpdater(QObject):
    progress_updated = pyqtSignal(int)

    def update_progress(self, value):
        self.progress_updated.emit(value)

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        self.progress_bar = QProgressBar()
        self.update_button = QPushButton("Update Progress")
        self.update_button.clicked.connect(self.update_progress)

        layout = QVBoxLayout()
        layout.addWidget(self.progress_bar)
        layout.addWidget(self.update_button)

        central_widget = QWidget()
        central_widget.setLayout(layout)
        self.setCentralWidget(central_widget)

        self.progress_updater = ProgressBarUpdater()
        self.progress_updater.progress_updated.connect(self.update_progress_bar)

    def update_progress(self):
        # 模拟从其他模块获取到的进度值
        progress_value = 50
        self.progress_updater.update_progress(progress_value)

    def update_progress_bar(self, value):
        self.progress_bar.setValue(value)

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