2. Class Exam Results Create a python program that allows a professor to input test results, and calculate the average and high score. The professor is not sure how many students took the exam that day, so you'll need to use a loop that iterates until the professor indicates there are no more students to enter. Include field validation logic to ensure the professor has entered valid test scores. You'll need an accumulator and counter variable to calculate the average. To determine the high, you'll need a variable that stores the current high score as you're iterating thru all the students' results. If a given student's score is higher than the current high score, that becomes the new high score. Initialize the high score to a 0 so the first student's score is automatically higher. Once the loop has ended, you've got all the information you need to print the class average, number of students and the high exam score