```
indent preformatted text by 4 spaces
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]
}
students = [lloyd, alice, tyler]
# Add your function below!
def average(numbers):
average = 0
total = sum(numbers)
total = float(total)
divide = total/len(numbers)
average = 0 + divide
return average
def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
return .1 * homework + .3 * quizzes + .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"
def get_class_average(classroom):
results = []
for yam in students:
results.append(get_average(yam))
return average(results)
```

# Oops, try again. get_class_average([alice]) returned 83.8666666667 instead of 91.15 as expected

Hi @betaslayer86306 ,

Assuming your `get_class_average`

function is indented correctly, it is as follows ...

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

The problem is that here ...

`for yam in students:`

... your function ignores its parameter, `classroom`

, and accesses the global list, `students`

instead. To access the parameter, do this ...

`for yam in classroom:`

... or change the name of the parameter to `students`

.

Ok, after a lot of trial and error, this worked:

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)

return total / len(numbers)

def get_average(student):

homework = average(student["homework"])

quizzes = average(student["quizzes"])

tests = average(student["tests"])

sum = homework * .1 + quizzes * .3 + tests * .6

return sum

def get_letter_grade(score):

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"

get_letter_grade(get_average(lloyd))

def get_class_average(students):

results = []

for student in students:

result = get_average(student)

print result

results.append(result)

print results

return average(results)

students = [lloyd, alice, tyler]

get_class_average(students)