QTableWidget - Retrieve content from a cell

[Axel_Erfurt]

But it can also work with a checkable QTableWidgetItem

from PyQt5.QtWidgets import (QMainWindow, QApplication, QPushButton, 
                              QTableWidget, QTableWidgetItem, QMessageBox)
  
from PyQt5.QtCore import Qt
  
  
class mainWin(QMainWindow):
    def __init__(self, parent=None):
        super(mainWin, self).__init__(parent)
        self.setupUI()
  
    def setupUI(self):
        self.setGeometry(0, 0, 800, 600)
        self.setContentsMargins(10, 5, 10, 5)
        
        tbar = self.addToolBar("Toolbar")
        btn = QPushButton("check selected", clicked=self.get_checked_items)
        tbar.addWidget(btn)
        
        self.lb = QTableWidget(20, 2)
        self.setCentralWidget(self.lb)
        self.make_table()
  
    def make_table(self):
        for row in range(self.lb.rowCount()):
            self.lb.setItem(row, 0, QTableWidgetItem(f"cell {row}"))
            checkbox_item = QTableWidgetItem()
            checkbox_item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsUserCheckable) 
            checkbox_item.setCheckState(Qt.Unchecked)
            self.lb.setItem(row, 1, checkbox_item)
        ### check every 3rd for testing
        for row in range(0, 19, 3):
            self.lb.item(row, 1).setCheckState(Qt.Checked)
              
              
    def get_checked_items(self):
        items = []
        for row in range(self.lb.rowCount()):
            if self.lb.item(row, 1).checkState() == Qt.Checked:
                items.append(self.lb.item(row, 0).text())
                  
        message = f"checked items: {items}"
        print(message)
        msg = QMessageBox(1, "checked items", '\n'.join(items), QMessageBox.Ok)
        msg.exec()
  
  
if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    win = mainWin()
    win.setWindowTitle("Example")
    win.show()
  
    sys.exit(app.exec_())