Guys please help !

This is the link to the problem I am stuck on is

https://www.codecademy.com/en/courses/python-beginner-en-qzsCL/1/4?curriculum_id=4f89dab3d788890003000096

When I run my code I get an error saying that the line in which i define class (as in class = [lloyd, alice, tyler ] ) it says that it is invalid syntax

```
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 )
average = total / len( numbers )
return average
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"
print get_letter_grade(get_average(lloyd))
class = [lloyd, alice, tyler]
def get_class_average(students):
results = []
for student in class:
results.append(get_average(student))
return average(results)
```

That's my code