How to create a self resizing grid of buttons in tkinter?

Question

I am trying to create a grid of buttons(in order to achieve the clickable cell effect) with Tkinter.

My main problem is that I cannot make the grid and

Answer 1

To make the buttons expand when the window is maximized, try to modify the button.grid entry as follows:

btn.grid(column=x, row=y, sticky=N+S+E+W)