ttk

ttk — Tk themed widgets

The ttk module provides access to the Tk themed widget set, which has been introduced in Tk 8.5. If Python is not compiled against Tk 8.5 code may still use this module as long as Tile is installed. However, some features provided by the new Tk, like anti-aliased font rendering under X11, window transparency (on X11 you will need a composition window manager) will be missing.

The basic idea of ttk is to separate, to the extent possible, the code implementing a widget’s behavior from the code implementing its appearance.