PyQt QTableView是否获取跨多个列的单元格的起始索引？

from PyQt5.QtWidgets import QApplication, QMainWindow, QTableView
from PyQt5.QtCore import QModelIndex

class MyTableView(QTableView):
    def __init__(self):
        super().__init__()

    def get_start_index_of_spanned_cell(self):
        selected_indexes = self.selectedIndexes()
        start_index = None

        for index in selected_indexes:
            if index.column() == 0:  # 假设跨多个列的起始索引为第一列
                start_index = index
                break

        if start_index:
            row = start_index.row()
            column = start_index.column()
            text = self.model().data(start_index)
            print("起始索引：行{}, 列{}, 文本内容: {}".format(row, column, text))
        else:
            print("未找到跨多个列的起始索引")

if __name__ == '__main__':
    app = QApplication([])
    window = QMainWindow()
    table_view = MyTableView()
    window.setCentralWidget(table_view)
    window.show()

    # 调用get_start_index_of_spanned_cell()方法来获取跨多个列的单元格的起始索引
    table_view.get_start_index_of_spanned_cell()

    app.exec_()