8_kyu_Grasshopper_Grade_book.py

# Grade book
# Complete the function so that it finds the mean of the three scores passed to it
# and returns the letter value associated with that grade.

# Numerical Score	Letter Grade
# 90 <= score <= 100	'A'
# 80 <= score < 90	'B'
# 70 <= score < 80	'C'
# 60 <= score < 70	'D'
# 0 <= score < 60	'F'
# Tested values are all between 0 and 100.
# Theres is no need to check for negative values or values greater than 100.

def get_grade(s1, s2, s3):
    list = s1,s2,s3
    score = sum(list) / len(list)
    if 90 <= score <= 100:
        return 'A'
    if 80 <= score < 90:
        return 'B'
    if 70 <= score < 80:
        return 'C'
    if 60 <= score < 70:
        return 'D'
    if 0 <= score < 60:
        return 'F'



print(get_grade(95, 90, 93))