Beginner - help for an exercice

[sparkz_alot]

Since you can't use 'A3driver.py' until you have 'A3.py', then creating 'A3.py' would be the logical first step.  Since there is no import or need for tkinter in 'A3.py', there is no need to worry about it at this point. The functions themselves are fairly well explained as to what their purpose is, it is up to you to create the code that results in what is described in the description. The best way to approach this, imho, is to look over the entire script and make sure you understand what each function does. If a function 'stands' on it's own (requires nothing from another function) write those first. If a function requires the output from another function, you need to write the function that supply's the output before you write the one that requires the output.

If you get stuck, we are here to help. Be sure to post your code, output and any errors (in their entirety) between the proper tags. There are enough links on this site that you can click for information on how to properly post your code.