单击按钮时更新视图的PyQt5 QTableView

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QTableView, QPushButton
from PyQt5.QtGui import QStandardItemModel, QStandardItem
from PyQt5.QtCore import Qt

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

        self.table_view = QTableView(self)
        self.setCentralWidget(self.table_view)

        self.button = QPushButton("更新视图", self)
        self.button.clicked.connect(self.update_view)

        self.model = QStandardItemModel(self)
        self.table_view.setModel(self.model)

        self.init_data()

    def init_data(self):
        # 初始化数据模型
        self.model.setColumnCount(3)
        self.model.setRowCount(3)
        self.model.setHorizontalHeaderLabels(["列1", "列2", "列3"])

        for row in range(3):
            for col in range(3):
                item = QStandardItem(f"行{row+1}列{col+1}")
                self.model.setItem(row, col, item)

    def update_view(self):
        # 更新数据模型中的数据
        for row in range(3):
            for col in range(3):
                item = self.model.item(row, col)
                item.setText(f"更新行{row+1}列{col+1}")
                self.model.setItem(row, col, item)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    window = MainWindow()
    window.show()
    sys.exit(app.exec_())