# "How Is Everyone Doing?"...don't know about ya'll, but i'm stuck

#1

here's the code...and I get an error message "Oops, try again, One of the following is missing or broken when we tried to use it: alice, Lloyd, tyler, students, get_class_average, get_letter_grade"

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)
average = total / len(numbers)
return average
def get_average(student):
homework = 0.1 * average(student["homework"])
quizzes = 0.3 * average(student["quizzes"])
tests = 0.6 * average(student["tests"])
return (homework + quizzes + tests)

score = float(score)
if score >= 90:
return "A"
elif score >= 80:
return "B"
elif score >= 70:
return "C"
elif score >= 60:
return "D"
elif score < 60:
return "F"

``students=["lloyd", "alice", "tyler"]``

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

``````    class_average=get_class_average(students)
print get_class_average

#2

when you create the list students, you're passing strings instead of dictionaries. Try:
students = [lloyd, alice, tyler]

#3

You might find a solution here: this is a related post.

You should check related posts first.

#4

I am stuck here. it keeps erroring with "AttributeError: 'tuple' object has no attribute 'append'. any idea?

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)
``results = []``
``results = results + get_average(student)``