popular pmwtixor ttk extension packages for tkinter (described in or any other third-party packages in general for instancetix and ttk both provide additional widget options outlined in which are now part of python' standard library the third-party domain tends to change over timebut has hosted tree widgetshtml viewersfont selection dialogstablesand much more for tkinterand includes the pmw megawidget set many tkinter programs such as python' standard idle development gui include font dialogstree widgetsand more that you may be able to use in your own applications because such extensions are too complex for us to cover in useful fashion herethoughwe'll defer to other resources in the interest of space to sample richer options for your gui scriptsbe sure to consult tkintertktixttkand pmw documentation for more details on additional widgetsand visit the pypi website at or search the web for other third-party tkinter extensions should also mention that there are more widget configuration options than we have met on this tour consult tk and tkinter resources for options not listed explicitly here although other tkinter tools are analogous to those presented herethe space have for illustrating additional widgets and options in this book is limited by both my publisher and the finite nature of trees tkinter tourpart