Classwork:
Write a python program, StudentGrades_YI.py. The program has three dictionaries:
test1 = {‘bob’:88, ‘lisa’:100,…}
test2 = {‘bob’:85, ‘lisa’:95,…}
test3 = {‘bob’:80, ‘lisa’:98,…}

1. Add 5 more students (using the update method) and their grades in the dictionaries.
2. Create a dictionary with the students’ averages from test 1, 2 and 3.
3. Find the student with the highest average.
4. Print all the students names and averages.