Student Becomes the Teacher_How is Everybody Doing?


#1

Error:
4.0
C
Traceback (most recent call last):
File "python", line 58, in
File "python", line 55, in get_class_average
File "python", line 32, 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]
}

# Add your function below!
def average(numbers):
    total=sum(numbers)
    total=float(total)
    return(total/len(numbers))
numbers=[2,4,6]    
print (average(numbers))

student=[lloyd,alice,tyler]

def get_average(student):
    for i in student:
        a=average(student["homework"])
        b=average(student["quizzes"])
        c=average(student["tests"])    
        total=(a*0.10)+(b*0.30)+ (c*0.60)
        return(total)   
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"


print get_letter_grade(get_average(tyler))
students = ["lloyd","alice","tyler"]
def get_class_average(students):
    results=[]
    for student in students:
          a=get_average(student)
          results.append(a)  
    return average(results)
b= get_class_average(students)
print b
print get_letter_grade(b)

#2

Problem exists in this particular code..

students = ["lloyd","alice","tyler"]

lloyd,alice and tyler are variables not strings, they don't need to be quoted.

Just noted one more problem..

def get_average(student):
    for i in student:

why need for loop there ?


#3

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