In this project we worked with dictionaries for the first time. We also combined L-system trees with Zelle graphics trees. We also had additional practice with classes. After we modified our L-system to use dictionaries and changed rules we used the Zturtle created in lab to draw trees and buildings with the string interpreter. The resulting scene was pretty cool. A dictionary uses keys while a list uses variables. Lists have values listed in sequential order. You can only access items in the list by indexing them whereas you can use a key to find item more easily.