I am getting the answer as B even I am not calling get_letter_grade function. I thought the result would be in numbers. ANyone please explain the working

what changes should i make so i see the number grade too?

lloyd = {

"name": "Lloyd",

"homework": [90.0, 97.0, 75.0, 92.0],

"quizzes": [88.0, 40.0, 94.0],

"tests": [75.0, 90.0]

}

alice = {

"name": "Alice",

"homework": [100.0, 92.0, 98.0, 100.0],

"quizzes": [82.0, 83.0, 91.0],

"tests": [89.0, 97.0]

}

tyler = {

"name": "Tyler",

"homework": [0.0, 87.0, 75.0, 22.0],

"quizzes": [0.0, 75.0, 78.0],

"tests": [100.0, 100.0]

}

# Add your function below

def average(numbers):

total = sum(numbers)

total = float(total)

result = total/len(numbers)

return result

def get_average(student):

homework=average(student["homework"])

quizzes=average(student["quizzes"])

tests=average(student["tests"])

total_weight=0.1*homework + 0.3*quizzes + 0.6*tests

return total_weight

def get_letter_grade(score):

if score>=90:

return 'A'

elif score>=80:

return 'B'

elif score>=70:

return 'C'

elif score>=60:

return 'D'

else :

return 'F'

print get_letter_grade(get_average(lloyd))

# print get_letter_grade(get_average(lloyd))

def get_class_average(students):

results=[]

for student in students:

results.append(get_average(student))

return average(results)