如何将列宽设置为整个QTableWidget宽度？

# 导入必要的模块
from PyQt5.QtWidgets import QApplication, QTableWidget, QHeaderView, QTableWidgetItem
from PyQt5.QtCore import Qt

# 创建QApplication实例
app = QApplication([])

# 创建QTableWidget实例
tableWidget = QTableWidget()

# 设置表格行列数
tableWidget.setRowCount(3)
tableWidget.setColumnCount(4)

# 设置表格内容
for row in range(tableWidget.rowCount()):
    for col in range(tableWidget.columnCount()):
        item = QTableWidgetItem(f"Row {row}, Col {col}")
        tableWidget.setItem(row, col, item)

# 获取水平表头视图对象
header = tableWidget.horizontalHeader()

# 设置列的调整模式为Stretch
header.setSectionResizeMode(QHeaderView.Stretch)

# 显示QTableWidget
tableWidget.show()

# 运行应用程序
app.exec_()