# Part of a Whole

#1

Oops, try again. get_class_average([alice]) returned 83.8666666667 instead of 91.15 as expected

``````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]
}

class_list = [lloyd, alice, tyler]

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

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 students in class_list:
results.append(get_average(students))
return average(results)``````

#2

``for students in class_list:``

you shouldn't loop over all students, this function should also work, for one, two or three students (or more if you had more students), that is why you pass `students` as argument, loop over students, this give you the ability to pass a list with the students when calling the function, to calculate the average for these students

#3

Got it!
Its so logical to do that way.

``for student in students :``

#4