Testing Test your work by writing four programs. Two of these will be copies of others. When you are instructed to check something, use an if-statement and, if the expected behavior fails, print a message and terminate the program using the exit function. Write a program that will push a few values onto the a stack, then push a few values onto the b stack. The program should pop the values on the a stack and check that they are correct as they are popped. The program should pop the values on the b stack and check that they are correct as they are popped. Copy the previous program and increase the number of values pushed on a and or b to get a total number of CAPACITY values pushed between the two stacks. The program should not fail and both stack-full functions should return true. Copy the previous program and push one more value onto one of the stacks. The program should fail. Write a program that will check that popping from an empty stack terminates the program.

Develop the program incrementally: a) start by reading and displaying each line of the input file to make sure you are reading the data set correctly. b) use the split string method to extract information from each line into a list. print the list to prove that this step is working correctly. d) convert the exam scores to type int and calculate the student’s average. display those items to prove this step is working correctly. e) create a tuple containing the six items for each student (name, exam scores, exam mean). display the tuples to prove this step is working correctly. (optionally, you may want to have the exam scores in a list so your tuple is (name, scores_list, f) append each tuple to a list. display the list to prove this step is working correctly. g) use the sort list method to re-order the tuples in the list. display the list to prove this step is working correctly. h) use a for statement to display the contents of the list as a table (with appropriate formatting). i) use a for statement to calculate the average of all scores on exam #1, then display the results. note that you could have calculated this average within the first loop, but we are explicitly requiring you to do this calculation by looping though your list of tuples. j) add the logic to calculate the average of all scores on exam #2, then display the results.