title: I want to have a yes/no loop in my code, but I'm having trouble doing it (python 3.3)
body: <p>Sorry I'm just a beginner at python so this is probably a very simple question, but I have a code and I want to loop it so after the code asks the user if they want to play again and the user inputs 'yes' to restart the code and 'no' to end the code. If they input anything other than yes or no it should ask tell them to enter yes or no then ask the question again. How would I do this exactly? (I do know about while and for loops but I'm not sure how I would use them in this way)</p>