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)

#print total

new_total = float(total)

average = new_total/len(numbers)

#print average

return average

# numbers = [33,22,11,44,55]

# average(numbers)

# Add the weighted average assignment here

def get_average(student):

homework = average(student["homework"])

quizzes = average(student["quizzes"])

tests = average(student["tests"])

wt_avg = 0.1*homework + 0.3*quizzes + 0.6*tests

print wt_avg

return wt_avg

# function for getting a letter grade

def get_letter_grade(score):

if score >= 90:

grade = "A"

elif score >=80:

grade = "B"

elif score >= 70:

grade = "C"

elif score >= 60:

grade = "D"

else:

grade = "F"

print grade

return grade

# call the function

# get_average(lloyd)

student_name = raw_input('Enter the student name:')

get_letter_grade(get_average(student_name))

Every time I run this it gives me an error saying string indices must be integers. it looks like the input I'm giving it's taking it as a string and not as a dictionary. Can someone help here?