9/9: Global name 'average' is not defined


#1
indent preformatted text by 4 spaces

def get_class_average(students):
results = []
for x in students:
result = get_average(x)
print x["name"], result
results.append(result)
return average(results)

My code won't work- it says "Error: global name 'average' is not defined"


#2
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 get_average(student):
    homework=sum(student["homework"])/(len(student["homework"])*1.0)
    quizzes=sum(student["quizzes"])/(len(student["quizzes"])*1.0)
    tests=sum(student["tests"])/(len(student["tests"])*1.0)
    return  0.1*homework+0.3*quizzes+0.6*tests

def get_letter_grade(score):
    if score>=90:
        return "A"
    elif score>=80 and score<90:
        return "B"
    elif score>=70 and score<80:
        return "C"
    elif score>=60 and score<70:
        return "D"
    else: 
        return "F"

===

"""
google search
python list average site:stackoverflow.com
= http://stackoverflow.com/questions/9039961/finding-the-average-of-a-list
"""

print "alice average: "+str(get_average(alice))
#print get_letter_grade(60)

print "lloyd letter-grade: "+ str(get_letter_grade(get_average(lloyd)))
"""
print get_letter_grade(alice)
print get_letter_grade(tyler)
students=[lloyd, alice, tyler]
"""
def get_class_average(students):
    results=[]
    for student in students:
        #print student
        results.append(get_average(student))
    print "class results array: "+str(results)
    print "class average: "+str(sum(results)/(len(results)*1.0))
    
get_class_average(students)

8 - Part of the whole