Error: List Indices Must Be Integers, Not str


#1

I need help with my code. I seem to be getting this error but I am not sure what I am doing wrong:

get_average(alice) raised the following error: list indices must be integers, not str

The following is my code:

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)
  return total / len(numbers)

def get_average(student):
  student = ["lloyd", "alice", "tyler"]
  homework = average(student["homework"])
  quizzes = average(student["quizzes"])
  tests = average(student["tests"])
  return ("homework" * .1) + ("quizzes" * .3) + ("tests" * .6)

FAQ: Learn Python: Student Becomes the Teacher - Just Weight and See
#2

Hi @megasurfer27103,

You can’t have quotes around variable names, because then they get treated like strings. You should get rid of the student variable in the get_average() function, then remove the quotes around the variables on your last line.

It would make more sense to get the averages like this:

students = [lloyd, alice, tyler]
for student in students:
  get_average(student)