debug2.py

def score_to_letter_grade(grade):
    if grade > 90:
        return "A"
    elif grade >= 87:
        return "B+"
    elif grade >= 80:
        return "B"
    elif grade >= 77:
        return "C+"
    elif grade >= 70:
        return "C"
    elif grade >= 67:
        return "D+"
    elif grade >= 60:
        return "D"
    else:
        return "F"


print("Grade of 91 should be A: " + score_to_letter_grade(91))
print("Grade of 87 should be B+: " + score_to_letter_grade(87))
print("Grade of 81 should be B: " + score_to_letter_grade(81))
print("Grade of 77 should be C+: " + score_to_letter_grade(77))
print("Grade of 70 should be C: " + score_to_letter_grade(70))
print("Grade of 67 should be D+: " + score_to_letter_grade(67))
print("Grade of 60 should be D: " + score_to_letter_grade(60))
print("Grade of 59 should be F: " + score_to_letter_grade(59))