# 8/9 Part of the 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]
}

classlist = [lloyd, alice, tyler]
#classlist.sort()

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

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

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

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

#2

the function parameter students will hold the list with students, so that is what i would loop over:

``for student in students:``

and then append the get_average(student) to your results list

Tricky to give the for loop the same variable name as the function parameter

#3

For better understanding and lack of confusion I would advise you to call your global variable `students` and not,

And having a global variable students it would only be practical that you iterate over your dictionaries using `for student in students:` not,

After changing those two errors the second argument in this statement,

should then be `student` and not `students`

#4

getting following error now:

Oops, try again. get_class_average([alice]) resulted in an error: list indices must be integers, not str

#5

We can't see the changes you made, post an updated version of your code

#6

yes Bandit Your solution worked. Thanks

#7

Thanks. May be you told me in short and i couldn't understand.