How it works...

The most basic way of instantiation of Button is using the text option to set the button label and the command option that references the function to be invoked when the button is clicked.

In out example, we also added PhotoImage via the image option, which takes precedence over the text string. The compound option serves to combine image and text in the same button, determining the position where the image is placed. It accepts the following constants as valid values: CENTER, BOTTOM, LEFT, RIGHT, and TOP.

The second row of buttons is created with a list comprehension, using the list of RELIEF values. The label of each button corresponds to the name of the constant, so you can note the difference in the appearance of each button.