背景颜色给定PyQt5中QAbstractTableModel的行号的特定表行

from PyQt5.QtCore import Qt, QAbstractTableModel, QModelIndex
from PyQt5.QtGui import QColor
from PyQt5.QtWidgets import QApplication, QTableView

class CustomTableModel(QAbstractTableModel):
    def __init__(self, data, parent=None):
        super().__init__(parent)
        self.data = data

    def rowCount(self, parent=QModelIndex()):
        return len(self.data)

    def columnCount(self, parent=QModelIndex()):
        return len(self.data[0])

    def data(self, index, role=Qt.DisplayRole):
        if role == Qt.DisplayRole:
            row = index.row()
            col = index.column()
            return str(self.data[row][col])
        elif role == Qt.BackgroundRole:
            row = index.row()
            if row % 2 == 0:
                return QColor(255, 255, 255)  # 白色背景
            else:
                return QColor(240, 240, 240)  # 灰色背景
        return None

if __name__ == '__main__':
    app = QApplication([])
    data = [
        ['A', 'B', 'C'],
        ['D', 'E', 'F'],
        ['G', 'H', 'I'],
        ['J', 'K', 'L']
    ]
    model = CustomTableModel(data)
    view = QTableView()
    view.setModel(model)
    view.show()
    app.exec()