```
= {
"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]
results=[]
# Add your function below!
def average(numbers):
sum(numbers)
total=sum(numbers)
return float(total)/len(numbers)
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_average(students):
homework=average(student['homework'])
quizzes=average(student['quizzes'])
tests=average(student['tests'])
return 0.1*homework+0.3*quizzes+0.6*tests
print get_letter_grade(get_average([lloyd])
def get_class_average(students):
for student in students:
results.append(get_average(student))
return average(results)
get_class_average(students)
get_class_average([lloyd])
get_class_average([lloyd,alice])
```

# Part of the whole

**pragati1234**#1

**stetim94**#2

line1:

` = {`

my assumption? copy paste mistake, `lloyd`

is missing

the actual problem is in this line:

`print get_letter_grade(get_average([lloyd])`

take a close look at the parentheses

**system**#3

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