How is Everybody Doing?


#1



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


"Oops, try again. One of the following is missing or broken when we tried to use it: alice, lloyd, tyler, students, get_class_average, get_letter_grade"

Output console:
"Traceback (most recent call last):
File "python", line 54, in
File "python", line 50, in get_class_average
File "python", line 27, in get_average
TypeError: string indices must be integers, not str"


I expect it to execute just fine.


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):
    homework = average(student["homework"])
    quizzes = average(student["quizzes"])
    tests = average(student["tests"])
    result = 0.1 * homework + 0.3 * quizzes + 0.6 * tests
    return result
    
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(students):
    results = []
    for student in students:   
        results.append(get_average(student))
    return average(results)
    
candidates = ["lloyd", "alice", "tyler"]    
print get_class_average(candidates)
print 
print get_letter_grade(get_class_average(candidates))


#2

your list with students should be called students, not canidates

I am afraid in the exercise you have no freedom of naming you list


#3

Nope. still not working.

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

Here, still the same errors.


#4

i am blind.

In your students lists you stored strings, you should instead store reference to your dictionary in your list


#5

Just figured that out by trial and error about the same time you posted your reply now.

Thanks. Cheers. :slight_smile:


#6