# It says"TypeError: get_average() takes exactly 1 argument (0 given)"

#1

``````Replace this line with your code.
loyd = {
"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)
total=total/len(numbers)
def get_average(student):
homework=average(student["homework"])*.10
quizzes = average(student["quizzes"])*.30
tests   = average(student["tests"])*.60
return homework+quizzes+tests

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(students):
results=[]
students = ["lloyd", "alice", "tyler"]
for student in students:
get_average(student)
results.append(get_average(student))
return average(results)``````

#2

This is your `get_average` function:

``````def get_average(student):
homework=average(student["homework"])*.10
quizzes = average(student["quizzes"])*.30
tests   = average(student["tests"])*.60
return homework+quizzes+tests``````

It takes one argument - student.

In this line:

``print get_letter_grade(get_average())``

you have called function `get_average` without any arguments, that's the problem Do you understand?

You have to specify for which student you want to calculate the average.

#3

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