如何在PyQt TableWidget中刷新数据？

from PyQt5.QtWidgets import QApplication, QMainWindow, QTableWidget, QTableWidgetItem

class MyWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        
        self.tableWidget = QTableWidget(self)
        self.tableWidget.setRowCount(3)
        self.tableWidget.setColumnCount(2)
        
        self.refresh_data()
        
    def refresh_data(self):
        # 清空表格中的数据
        self.tableWidget.clearContents()
        
        # 设置新的行数
        self.tableWidget.setRowCount(5)
        
        # 添加新的数据
        for row in range(self.tableWidget.rowCount()):
            for col in range(self.tableWidget.columnCount()):
                item = QTableWidgetItem(f"Data {row}-{col}")
                self.tableWidget.setItem(row, col, item)

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