Texts: in Python
Test Average and Grade
Write a program that asks the user to enter four test scores for each of 5 students. The program should display a letter grade for the average test score of each student based on the following grading scale:
Score
Letter Grade
90-100
A
80-89
B
70-79
C
60-69
D
Below 60
F
The test score cannot be negative or more than 100 (do the data validation, add comments, and version control).