Student become teacher


#1

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]
# Add your function below!
def average(numbers):
    total=sum(numbers)
    total=float(total)/len(numbers)
    return total
def get_average(student):
    homework=0.1*average(student["homework"])
    quizzes=0.3*average(student["quizzes"])
    tests=0.6*average(student["tests"])
    return homework+quizzes+tests
def get_letter_grade(score):
    if score>=90:
        return "A"
    elif score>=80:
        return "B"
    elif score>=70:
        return "C"
    elif score>=60:
        return "D"
    else:
        return "F"
score1=get_average(lloyd)
score2=get_average(alice)
score3=get_average(tyler)
print score1
print score2
print score3
print get_letter_grade(score)
results=[]
def get_class_average(students):
    for student in students:
        x=get_average(student)
        results.append(x)
    return results
results=get_class_average(students)
print results
aver=average(results)
print aver

error is coming in this code.
how to rectify it ?


#2

Whats the error you're getting? Also, could you format your code please? Just highlight your code and press the </> button


#3

get_class_average([alice]) resulted in an error: list indices must be integers, not str


#4

Why do you have this part? I doubt it's the error, I'm just curious.


#5

no its not the error
i was just curious if the averages of individual was right


#6

Alright I think I figured it out.

  1. In your get_class_average function when you're using return results you want to use return average(results)

  2. Delete print get_letter_grade(score) because score isn't defined.

  3. Replace your last 4 lines of your code with the following;

print get_class_average([lloyd,alice,tyler])
print get_letter_grade(get_class_average([lloyd,alice,tyler]))

Let me know if it works


#7

get_class_average([alice]) returned 83.8666666667 instead of 91.15 as expected

Got this error now


#8

Interesting....Could you post your updated code for me?