Tkinter module (“Tk interface”) is the standard Python interface to the Tk GUI toolkit. Both Tk and
Tkinter are available on most Unix platforms, as well as on Windows systems. (Tk itself is not part of Python; it is maintained at ActiveState.)
python -m Tkinter from the command line should open a window demonstrating a simple Tk interface, letting you know that
Tkinter is properly installed on your system, and also showing what version of Tcl/Tk is installed, so you can read the Tcl/Tk documentation specific to that version.