A college instructor has three students, Ashley, Barb, and Carl, who are taking her class. Each student has taken either 3 or 4 tests which have been graded. 

 

Write a Python program that performs the following steps. Label each block of code that performs these steps with an appropriate comment (e.g. # Step a):

1. Ask the user to enter 3 test scores for Ashley. Store the scores in a list named a_list. Display the list.
   • NOTE: The test scores could be entered as floating point numbers.
2. Ask the user to enter 4 test scores for Barb. Store the scores in a list named b_list. Display the list.
3. Ask the user to enter 3 test scores for Carl. Store the scores in a list named c_list. Display the list.
4. Use the following code to create a copy of each list and construct a list of lists from them:
5.  

all_scores = [a_list[:], b_list[:], c_list[:]]

1.  
2. Note: We want the elements of all_scores to be a copy of the three score lists but not the three score lists themselves. Therefore, the following code does not generate what we want:
3.  

all_scores = [a_list, b_list, c_list] # DO NOT DO THIS!!

                        

            After creating the all_scores list, print that list.