# Can Someone help me at : How is Everybody Doing?

#1

I keep getting an error which says:"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)

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

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

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

print get_class_average([lloyd, alice, tyler])

#2

Hi, @tanyixun ,

As of Exercise 3: Put It Together, you should have this assignment statement to establish a global variable, `students` ...

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

Then, consider how you can use that variable, here ...

``````print get_class_average([lloyd, alice, tyler])