Help 9/9 error


#1

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]
}

Add your function below!

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

def get_letter_grade(score):

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

get_letter_grade(get_average(lloyd))
print get_letter_grade(lloyd)

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

students = [lloyd, alice, tyler]
print get_class_average(students)
print get_letter_grade(get_average(students))

and i get a error
A
83.8666666667
Traceback (most recent call last):
File "python", line 58, in
File "python", line 29, in get_average
TypeError: list indices must be integers, not str


#2

instead of

at the end, do

anyvariable = get_class_average(students)
print get_class_average(students)
print get_letter_grade(anyvariable)

worked for me.
hope this helped you @noelsg