# 9. How is everybody doing?

#1

Don't really know what I'm doing wrong. Gives 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

Also shows error: Traceback (most recent call last):
File "python", line 57, in
File "python", line 52, in get_class_average
AttributeError: 'dict' object has no attribute 'append'

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)
total = 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

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_average(lloyd)

# students = [lloyd, alice, tyler]

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

students = [lloyd, alice, tyler]

print get_class_average(students)

#2

Hi could you use the formating (select your code and click </>) with your code, it will be easier to read and to spot problems.
thank you

#3
``````get_average(student)
results = student.append(get_average)``````

These two lines don't make any sense. In the first line you call the function get_average(student) without doing anything with the result and I'm not sure what the second one is supposed to do. 'student' here is a dictionary. Dictionaries don't have an append attribute (as the error message says) and you have never defined the get_average variable you use as an argument.

#4

This worked for me:
print get_class_average([lloyd, alice, tyler])

#5

Quick question:
Why did you use 0.1, 0.3 and 0.6 in

``````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``````

?

#6

That should be the percentage each one is worth

#7

Cause in task said about 10%, 30% and 60% weights of tests, quizzes and homework.

#8

You know. I looked and looked at the exercise and could not find any reference to the 10, 30 and 60 % there, but thanks for clarifying

#9
``````print get_class_average(students)

This worked for me.

#10

I tried many time but it failed

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

Can you give me a hand?

#11

Ive tried to change class_list on students but still got errors. The code as below. How to fix it?
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)
total = 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
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=[]
for student in students:
results.append(get_average(student))

# print results

``return average(results)``

students = [lloyd, alice, tyler]
print get_class_average(students)

#12

I don't know why this error is popping up. I'm getting the same 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

It's weird. On the lesson before that, my code worked just fine. However, when I tried to run it again on this lesson, it gave me that error, even when I took out:

``````print get_class_average(students)

I don't know why this is happening. Thanks for the help!

#13
``````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)
total = total / len(numbers)

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

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

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

I keep getting the error below when I run code above, I'm not sure what could be the problem

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

#14

Strangely, just using the following works:

print get_class_average(students)

#15

It doesn't for me what else works??

#17

#18

please make a new topic, fill in the template so we have all the details needed to help you. This topic is now closed because its really old