python

Write a program that by using a loop to ask the user to enter three valid test scores, then store the valid test scores in a list. The program should display a letter grade for each score and the average test score. Write the following functions in the program: get_valid score: This function takes no arguments. It should prompt the user to input a test score and then validate the score of the score is less than 0 or greater than 100, then ask user re-enter a score, until user enter a valid one), finally the function returns the valid input. Use a while loop to validate the input calc average: This function should accept three test scores as arguments and return the average of the score. determine grade: This function should accept a test score as an argument and return a letter grade for the score base on the following grading scale. . Score Letter Grade 90-100 A B 80-80 70-70 C D 50-60 0-59 F Notes you should first define these functions, and then use them in the appropriate place to match the desired description of the program Example Please enter a test scor 110 That is not a valid score Please enter a fost score: 0 This student relieved in A on the lost Please enter a fost score This student received and on the test Please enter a fest score 4 That is not a valid score Please enter a test score: 10 This student recieved on the test The average of the 3 test scores was 84.67