This may be a dumb question, because I'm VERY new at this, but I'm a little confused as to where the variable "number" is coming from. It is used in both the "For One and All" and "More with For" exercises. Obviously, the list contains numbers, but I don't really understand where this variable is defined.
start_list = [5, 3, 1, 2, 4] square_list =  # Your code here! for number in start_list: square_list.append(number ** 2) square_list.sort() print square_list