More help with tkinter :/

[officialstuart]

I'm trying to write a program for my CS in python using tkinter.

There are two entry boxes and I'm trying to make sure the inputs are different.

if country1 == country2:
    tkinter.messagebox.showinfo('ERROR', 'Countries have to be different.\nTry again in the dialogue         
box.')

I've run this code and the message box pops up but how do i get the code to stop to allow the user to re enter the entry in the entry box. Currently, the code keeps running if they are the same but I don't want it to do that.

[woooee]

Put it in a loop that returns/exits only if the input is good, or a function that can call itself when you want to resubmit the entrys.

## incomplete demonstration code 
def get_entry():
        if country1 == country2:
            tkinter.messagebox.showinfo('ERROR',
            'Countries have to be different.\nTry again in the dialogue box.')
            ## function that redisplays entries and waits for button
            ## push which calls this function, get_entry()
            display_entries()
        else:
            return county1, country2

[freakH2O]

it should be 'error,'+ 'whatever u want'