9.7 python help

9.7 (Class Average: Reading a Gradebook Dictionary from a JSON File) Reimplement Exercise 9.4 using the son module to read the grades.json file created in the previous exercise. Display the data in tabular format, including an additional column showing each student's average to the right of that student's three exam grades and an additional row showing the class average on each exam below that exam's column. 9.3 (Class Average: Writing Student Records to a CSV File) An instructor teaches a class in which each student takes three exams. The instructor would like to store this in- formation in a file named grades.csv for later use. Write code that enables an instructor to enter each student's first name and last name as strings and the student's three exam grades as integers. Use the csv module to write each record into the grades.csv file. Each record should be a single line of text in the following CSV format: firstname, lastname, exam Igrade, exam2grade, examZgrade 9.4 (Class Average: Reading Student Records from a CSV File) Use the csv module to read the grades.csv file from the previous exercise. Display the data in tabular format