# Having trouble with How is everyone doing

#1

``````Traceback (most recent call last):
File "python", line 47, in <module>
File "python", line 45, in get_class_average
File "python", line 26, in get_average
TypeError: string indices must be integers, not str``````

``````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]
}
students = ["lloyd", "alice", "tyler"]
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"])
return homework*0.1+quizzes*0.3+tests*0.6
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)
print get_class_average(students)

I have no idea what I'm doing wrong, I just followed the instructions

#2

your `students` list contains strings, why?

#3

I thought the students list is a list of the name of the student dictionaries.
so it get_class_average gets each student name, looks at their dictionary, and processes it

#4

■■■■, I'm an idiot, I see my mistake, thanks!

#5

my post was a question disguise as answer, good you solved it, this means you understand it. Good job, well done, be proud of yourself

#6

This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.