如何在PyQt5中复制粘贴QTableWidget中的多个单元格？

from PyQt5.QtWidgets import QApplication, QMainWindow, QTableWidget, QTableWidgetItem, QMenu, QAction, QHeaderView
from PyQt5.QtGui import QClipboard
from PyQt5.QtCore import Qt

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

        self.tableWidget = QTableWidget(self)
        self.setCentralWidget(self.tableWidget)

        self.initTable()

    def initTable(self):
        self.tableWidget.setRowCount(5)
        self.tableWidget.setColumnCount(5)
        self.tableWidget.setHorizontalHeaderLabels(['A', 'B', 'C', 'D', 'E'])

        # 设置表格为可编辑状态
        self.tableWidget.setEditTriggers(QTableWidget.AllEditTriggers)

        # 设置表格为可选中多个单元格
        self.tableWidget.setSelectionMode(QTableWidget.ContiguousSelection)

        # 设置表格为可复制粘贴
        self.tableWidget.setContextMenuPolicy(Qt.ActionsContextMenu)
        copyAction = QAction("Copy", self)
        copyAction.triggered.connect(self.copy)
        self.tableWidget.addAction(copyAction)

        pasteAction = QAction("Paste", self)
        pasteAction.triggered.connect(self.paste)
        self.tableWidget.addAction(pasteAction)

        # 设置表格自适应宽度
        self.tableWidget.horizontalHeader().setSectionResizeMode(QHeaderView.Stretch)

    def copy(self):
        selectedRanges = self.tableWidget.selectedRanges()
        if len(selectedRanges) > 0:
            range = selectedRanges[0]
            rows = range.rowCount()
            cols = range.columnCount()

            data = ""
            for row in range.rows:
                for col in range.columns:
                    cell = self.tableWidget.item(row, col)
                    if cell is not None:
                        data += cell.text()
                    if col < range.rightColumn:
                        data += "\t"
                if row < range.bottomRow:
                    data += "\n"

            clipboard = QApplication.clipboard()
            clipboard.setText(data)

    def paste(self):
        clipboard = QApplication.clipboard()
        data = clipboard.text()

        selectedRanges = self.tableWidget.selectedRanges()
        if len(selectedRanges) > 0:
            range = selectedRanges[0]
            rows = range.rowCount()
            cols = range.columnCount()

            row = range.topRow
            col = range.leftColumn

            for line in data.split('\n'):
                if row >= rows:
                    break

                for text in line.split('\t'):
                    if col >= cols:
                        break

                    item = QTableWidgetItem(text)
                    self.tableWidget.setItem(row, col, item)

                    col += 1
                row += 1

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