# 9/9 Why do I get an error for printing the values?

#1

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]
}

students = [lloyd,alice,tyler]

def average(numbers):
total = sum(numbers)
total = float(total)
total = float(total) / len(numbers)

def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
return 0.1 * homework + 0.3 * quizzes + 0.6 * tests

if score >= 90:
return "A"
elif score >= 80:
return "B"
elif score >= 70:
return "C"
elif score >= 60:
return "D"
else:
return "F"

def get_class_average(students):
results=[]
for student in students:
results.append(get_average(student))
return average(results)

print get_class_average(students)

# Then I get an error from the website about not printing the grade for the class average.

#2

Your `get_letter_grade` function takes as a parameter `score`. And this is your function call:

``get_letter_grade(students)``

Do you see a problem? You have passed a list of students as a `score`.

You should `print` result of `get_letter_grade` with calculated average as a parameter:

``print get_letter_grade(get_class_average(students))``

#3

average= get_class_average(students)
print average

first, you should print the number of average, and then pass this number to [get_letter_grade] to get the letter grade to print it.

try and understand the code above, it's worked ^^.

#4

Thanks alot guys. I really appreciate the help.