Part of the Whole HELP SOS

#1

Oops try again! get_class_average([alice]) resulted in an error: unsupported operand type(s) for +: 'int' and 'NoneType'

``````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"])
quizzes =  average(student["quizzes"])
tests = average(student["tests"])
homework = homework * 0.1
quizzes = quizzes * 0.3
tests = tests * 0.6

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

students = [lloyd, alice, tyler]

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

#2

your get_average function doesn't return anything, which means the default (None) is returned. Which means in get_class_average you have a list (results) full of None, of which you try to take the average, which results in an error

#3

Thank you. Works perfectly

#4

nicely done you understood that and manage to fix it

#5

Yes but now have gotten another problem with the next one lol

#6

Never mind, same problem, just didn't save

#7