# A question about Part of the Whole

#1

Hi.
I am using this course. I just wanted to know something.
Take a look at my code:

``````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]
}

def average(numbers):
total = sum(numbers)
total = float(total)
def get_average(student):
homework = average(student["homework"])
tests = average(student["tests"])
quizzes = average(student["quizzes"])
homework = homework*.10
tests = tests*.60
quizzes = quizzes*.30
return tests+homework+quizzes
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)``````

Do you see the "for student in students" line in the final function? Why do I use "in students"? When did I make "students" list? Can I just write "student in potatoes"? I just couldn't see why. If you could tell me , I'd appreciate it.

#2

okay got it. It is the argument of the function.

#3

Be sure to create the expected `students` list,

``students = [lloyd, alice, tyler]``

Insert it just below your existing data dictionaries.

#4

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