# How is Everybody Doing?

#1

"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"

Output console:
"Traceback (most recent call last):
File "python", line 54, in
File "python", line 50, in get_class_average
File "python", line 27, in get_average
TypeError: string indices must be integers, not str"

I expect it to execute just fine.

``````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 = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
result = 0.1 * homework + 0.3 * quizzes + 0.6 * tests
return result

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))
return average(results)

candidates = ["lloyd", "alice", "tyler"]
print get_class_average(candidates)
print

#2

your list with students should be called students, not canidates

I am afraid in the exercise you have no freedom of naming you list

#3

Nope. still not working.

Here, still the same errors.

#4

i am blind.