Professional sanitized user input demo

[G+_Darryl Medley]

Professional sanitized user input demo. The best way to get validated user input is to create reusable little functions that only allow certain types of values to  be entered. The key is to pass the prompt text as a parameter to the function so that you can create a wrapper around raw_input() essentially creating a specialized version of raw_input(). I've created a simple calculator program that has a both number and character entry functions as a demo:

http://pastebin.com/tDb8rqEm

http://pastebin.com/tDb8rqEm