Homework2A.python

#!/usr/bin/python

import sys;

argCount = len(sys.argv);

if (argCount != 5):
    print "Please provide 4 numeric test scores between 0 and 100";
else:
    score1 = int(sys.argv[1]);
    score2 = int(sys.argv[2]);
    score3 = int(sys.argv[3]);
    score4 = int(sys.argv[4]);
    if (score1 >= 0 and score1 <= 100 and score2 >= 0 and score2 <= 100 and score3 >= 0 and score3 <= 100 and score4 >= 0 and score4 <= 100):
        avg = (score1 + score2 + score3 + score4) / 4;
        print "The average score is: ", avg;
        letterGrade = " ";
        if (avg >= 90):
            letterGrade = "A";
        elif (avg >= 80):
            letterGrade = "B";
        elif (avg >= 70):
            letterGrade = "C";
        elif (avg >= 60):
            letterGrade = "D";
        elif (avg >= 50):
            letterGrade = "F";
        if (letterGrade == " "):
            print "Please seek extra help for this course";
        else:
            print "Letter Grade: ", letterGrade;
    else:
        print "Please provide 4 numeric test scores between 0 and 100";