更改QTableWidget最后一行中的点大小

from PyQt5.QtWidgets import QApplication, QTableWidget, QTableWidgetItem
from PyQt5.QtGui import QFont

# 创建QApplication实例
app = QApplication([])

# 创建QTableWidget实例
tableWidget = QTableWidget()

# 设置表格的行数和列数
tableWidget.setRowCount(5)
tableWidget.setColumnCount(3)

# 填充表格数据
for row in range(5):
    for col in range(3):
        item = QTableWidgetItem(f"({row}, {col})")
        tableWidget.setItem(row, col, item)

# 获取最后一行的索引
lastRow = tableWidget.rowCount() - 1

# 遍历最后一行的所有单元格
for col in range(tableWidget.columnCount()):
    item = tableWidget.item(lastRow, col)
    if item is not None:
        # 设置点大小为12
        font = QFont()
        font.setPointSize(12)
        item.setFont(font)

# 更新表格显示
tableWidget.update()

# 运行应用程序
app.exec_()