class subjectGradeBook(object):
def __init__(self):
self.grades={}
def addStudents(self,name):
self.grades[name]={}
def reportGrade(self,name,subject,grade):
k=self.grades[name]
gradeList=k.setdefault(subject,[])
gradeList.append(grade)
def averageGrade(self,name):
k=self.grades[name]
total,count=0,0
for grades in k.values():
total+=sum(k)
count+=len(k)
return total/count
book = subjectGradeBook()
book.addStudents('AlbertEinstein')
book.reportGrade('AlbertEinstein', 'Math', 75)
book.reportGrade('AlbertEinstein', 'Math', 65)
book.reportGrade('AlbertEinstein', 'Gym', 90)
book.reportGrade('AlbertEinstein', 'Gym', 95)
book.averageGrade('AlbertEinstein')
srinivasa reddy_1
0
Newbie Poster
woooee
814
Nearly a Posting Maven
k is a dictionary value for the Albert Einstien key self.grades[name] so you are trying to sum/add a dictionary total+=sum(k). I would suggest that you print "grades" so you at least know what it contains.
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