title: How do I change my python idle and general version from 3.4.3 to 2.7.9
body: <p>I have been searching for answers and have not found any.I was wondering how i could change the default idle to 2.7.9. I downloaded 3.4.3 first and now I don't know how to change to 2.7.9. I want to change so i can run Pygame.</p>