Tidier Exit

[Back] <- - + - -> [Next]
Although the Exit option will often appear last in a menu
it is often slightly better to test for 'x' first.

while True:
    # previous code                 ### The displayed menu is not changed
    if option == 'x':               ### Move the test for exit to the top
        break                       ### and change it from an elif to an if
    elif option == 'a':             ### Change the if for 'a' to an elif
        print 'You selected "a"'
    # previous code
    else:
        print 'Invalid choice - try again'

Running the code produces this output:

: Enter your choice: x

There is no change from the user's point of view.

The prototype menu system is now complete.