[PyQt] choose checkbox

[devilonline]

Hi, I have this code with pyqt5:

    elif (content1 == "next"):
            todos = ["one" , "two" , "three" , "four", "five"]
            self.todo_listWidget.show()
            for todo in todos:
                item = QListWidgetItem(todo)
                item.setFlags(item.flags() | QtCore.Qt.ItemIsUserCheckable)
                item.setCheckState(QtCore.Qt.Unchecked) 

                self.todo_listWidget.addItem(item)

And I want if i chose one item make something
like if item (x) is checked then do something



how can i do this?