# Lesson 9.9: How is Everybody doing. Could somebody post the entire correct code?

#1

I´ve been having trouble with this exercise for a while now. I thought I was doing exactly what others did before me and they seem to get it working. Doesn´t work for me however. Does anybody mind posting the entire exercise as it should be? I have used the code below and thought it was identical to others that reported it working, but it always throws the error: 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]
}

# Add your function below!

def average(numbers):
total = sum(numbers)
total = float(total)/len(numbers)
return total

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

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"

students = [lloyd, alice, tyler]

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

print get_class_average(students)
print get_letter_grade(get_class_average(students))

#2

It's a really small mistake. In your get_class_average function, when appending the average of each student's grade to the results list, you wrote (get_average(students)) instead of (get_average(student)). It should look like this:

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

#3

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)
return float(total) / len(numbers)

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"

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

students = [ lloyd, alice, tyler]

total_avg = get_class_average(students)
print total_avg
print get_letter_grade(total_avg)

#4

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