How is Everybody Doing?


#1


exercise link : https://www.codecademy.com/courses/python-beginner-en-qzsCL/1/5?curriculum_id=4f89dab3d788890003000096#

codeacademy give me green light to move on Congratulations, you've finished this course!, but python give me Error
the error is :
Traceback (most recent call last):
File "python", line 62, in
File "python", line 28, in get_average
TypeError: list indices must be integers, not str

i was expect it will work but it not


<html>
  <head>
  How is Everybody Doing?
  </head>
  
  <body>
    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(number):
    total = sum(number)
    total = float(total)/len(number)
    return total

def get_average(students):
    homework = average(students["homework"])
    quizzes = average(students["quizzes"])
    tests = average(students["tests"])
    homework *= 0.1
    quizzes *= 0.3
    tests *= 0.6
    n= tests + quizzes + homework
    return n
    
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(lloyd))

def get_class_average(student):
    result = []
    for l in student:
        t = get_average(l)
        result.append(t)
    return average(result)
    
students = [lloyd, alice, tyler]
print get_class_average(students)
for b in students:
    print get_letter_grade(get_average(students))
    
    
  </body>
</html>


#3

the problem is here:

for b in students:
    print get_letter_grade(get_average(students))

get_average is designed to calculate the average for a student, not for multiply students at once. use b instead of students:

for b in students:
    print get_letter_grade(get_average(b))

#4

thanks, it is work now , thank you


#5

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