In this assignment, you are to write a Python program that (1) continuously asks the user to enter an integer score until a 'q' is entered; (2) computes the average score; (3) computes a letter grade based on the average score, and (4) prints the number of scores entered, the average score and the letter grade. Note the letter grade is determined as: (1) If the average score is greater than or equal to 90, the letter grade is A; (2) If the average score is greater than or equal to 80 but less than 90, the letter grade is B; (3) If the average score is greater than or equal to 70 but less than 80, the letter grade is C; (4) If the average score is greater than or equal to 60 but less than 70, the letter grade is D; (5) If the average score is less than 60, the letter grade is F.> For example, if the scores entered are: 100 80 30 q Your program should report something like: The number of scores entered is 3, the average is 70.0, and the letter grade is C. Please submit your .py file in Canvas.