Suggestions: Chapter Summaries

I think it would be a good idea to put a chapter summary before each chapter. It would help us know what to expect as well as make it easier for us to go back and review it. I also think it would be easier for me to understand the new codes  if there was an example of the output it would produce, especially for things like...

index = 0
while index < len(fruit):
    letter = fruit[index]
    print letter
    index += 1

...you explain what the output is, but it's difficult to understand without a visual picture of what it's supposed to do. It would be more clear if you showed

index = 0

 while index < len(fruit):

     letter = fruit[index]

     print letter

     index += 1

 
b
a
n
a
n
a