File "../PyGObject-Tutorial/examples/listbox_demo.py", line 87 listbox_2.connect('row-activated', lambda widget, row: print(row.data)) ^ SyntaxError: invalid syntax ...

A listbox displays a list of single-line text items, and allows users to browse through the list, and selecting one or more items. Create a listbox the old way The old way of creating a listbox, was ...