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What to do/hand in?

1. Read through and complete the Part 7 - Introduction to Lists tutorial. Make sure to complete Exercise 1, and Exercise 2 which requires Chapter 7: Section 7.7 - Secret Codes from Programming Arcade Games.

2. Complete the Part 7 - Worksheet. Attempt to predict what the output will be without actually running the code. Verify your answers afterwards.

Submit:

1. Exercise #1 in part d) - Both parts (1 and 2) in a file called Part7_Ex1.py

2. Exercise #2 in part f) - In a file called Part7_Ex2.py. The user should enter the phrase that is to be encrypted.

3. Part 7 - Worksheet

Hints and FAQ's

1. Use square bracksts '[ ]' when accessing an index on a list.

2. Use len(list_name) to tell you how many elements are stored in a list.

3. List indexes start at 0, and end at one less than the number of elements in the list. len(list_name) - 1

4. Lists can store numbers, strings, boolean types even other lists, and much more.

5. Here are some useful functions for working with lists:

• list_name.append(item) - Adds a new item to the end of the list
• list_name.insert(index, item) - adds a new item to the specified index
• list_name.remove(item) - searches a list and removes the first occurrence of item
• list_name.pop(index) - removes an item at the specified index and returns it

6. Use a for loop to iterate through a list. Here are two ways to do it:

Version 1

#Item in this example gives you access to each element in the list.

#Note that you cannot directly change the value of item in the original list

for item in listName:                 

    print(item)                       

or

Version 2

#Here you can use the index value to access an element in the list

#to either retrieve its value, or to change it in the original list

for index in range(len(listName)):     

    print(listName[index])