ch11 ex2

##2
class Student():

    def __init__(self, name, age, list_of_marks):
        self.name = name
        self.age = age
        self.marks = {
            "english": list_of_marks[0],
            "science": list_of_marks[1],
            "maths": list_of_marks[2],
        }

    def get_all_subjects(self):
        return list(self.marks.keys()) # because all the keys in the dictionary are basically subjects

    def check_subject(self, subject):
        return subject in self.marks.keys()

        ### statement above is as good as statements below
        # if subject in self.marks.keys:
        #     return True
        # else:
        #     return False

    def getAverage(self):
        return sum(self.marks.values())/len(self.marks.values())


b = Student("Bruce", 24, [92, 95, 99])
a = Student("Alfred", 42, [29, 59, 88])

print(b.getAverage())