using python

For the next two functions assume the parameter super_grades is a list of lists with the following structure and types ... super_grades = [ [ 'Student', 'Exam 1', 'Exam 2', 'Exam 3', 'HW Avg'i, [ 'Eric', '100', 90', '80', 90'), [ 'Josh', '88', '99', '111', 92'), [ 'Manny', '45', 156', 67', 54'). [ 'Colleen', '59', '61', 67', *72'), [ Bohong', "73', "79', "83', 85'). [ 'Marylyn', 189', '97', '101', '80'), [ 'Xinran', *40', '50', '100', 87'] Function name: calc final grades Parameters: super_grades (list) Return Type: dict Description: This function should return a dictionary that maps the students name to their final letter grade. The final grade is calculated by taking 0.25 * ( + + ). When determining the letter grade, use the same grade cut offs defined in the syllabus. Test Case: >>> calc_final_grades (super_grades) 'Eric': 'A', "Josh': 'A', 'Manny': 'F', Colleen': 'D', 'Bohong': 'B', Marylyn': 'A', "Xinran': 'D