This is a list of all valid keywordarguments of Listbox.__init__() listed in the test file: 
'activestyle', 'background', 'borderwidth', 'cursor',
'disabledforeground', 'exportselection',
'font', 'foreground', 'height',
'highlightbackground', 'highlightcolor', 'highlightthickness',
'listvariable', 'relief',
'selectbackground', 'selectborderwidth', 'selectforeground',
'selectmode', 'setgrid', 'state',
'takefocus', 'width', 'xscrollcommand', 'yscrollcommand'

The ones that are missing in the doc string:
'activestyle', 'disabledforeground', 
'listvariable','state'