# Part of the Whole weird error

#1

I am getting a weird error when I run my code for this exercise: https://www.codecademy.com/en/courses/python-beginner-en-qzsCL/1/4?curriculum_id=4f89dab3d788890003000096

It is returning the error:

I looks like it is trying to pass one name through at a time from some other list, but if I try to define the list students = [alice, lloyd, tyler] outside of this function then I get another error saying students is undefined. I've also tried creating empty lists that may be filled within the function, but I still return errors. I'm quite stuck, can someone please assist?

Thank you!!!!!!

Mike

``````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 = float(sum(numbers))
average = total / len(numbers)
return average

def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
return homework * .1 + quizzes * .3 + tests * .6

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 [tyler,lloyd,alice]:
results.append(get_average(student))
return average(results)

print get_class_average(lloyd)
print get_average(alice)``````

#2

Hi, @blogsolver76293 ,

Consider carefully how the `get_class_average` function should work.

1) What should be the role of the parameter, `students`?

2) What should be the relationship between the `for` loop and this statement? ...

``return average(results)``

#3

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 = float(sum(numbers))
average = total / len(numbers)
return average

def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
return homework * .1 + quizzes * .3 + tests * .6

if score >= 90:
return "A"
elif score >= 80:
return "B"
elif score >= 70:
return "C"
elif score >= 60:
return "D"
else:
return "F"
l = [lloyd,alice,tyler]

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

print get_class_average(l)

#4

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