def update_cell(self, row, column, value):
        """Set the value of a table cell"""

        item_ID = self.interior.get_children()[row]
        
        data = self.item_ID_to_row_data(item_ID)
        
        data[column] = value
        self.interior.item(item_ID, values=data)
Set the value of a table cell
recipes/Python/580746_Tkinter_treeview_like_table_or_multicolumn/recipe-580746.py