'Construct a listbox widget with the parent MASTER.
Valid resource names: background, bd, bg, borderwidth, cursor,
exportselection, fg, font, foreground, height, highlightbackground,
highlightcolor, highlightthickness, relief, selectbackground,
selectborderwidth, selectforeground, selectmode, setgrid, takefocus,
width, xscrollcommand, yscrollcommand, listvariable.'

def __init__(self, master=None, cnf={}, **kw):

    Widget.__init__(self, master, 'listbox', cnf, kw)
