Changing state of buttons.

[Jamey Saunders]

Hi all,

I'm just learning Python (I'm about 8 hours in so far), and I have a
problem.  I'm writing a small Windows app using Tkinter.  I have two
buttons on my screen that I want to start in an inactive state
(already have that working) and when two input fields have some data
input, the buttons would become active.  What's the best way to go
about changing the state of buttons that already exist?

Thanks!