grade.py

class Person:
	def __init__(self, firstName, lastName, idNumber):
		self.firstName = firstName
		self.lastName = lastName
		self.idNumber = idNumber
	def printPerson(self):
		print("Name:", self.lastName + ",", self.firstName)
		print("ID:", self.idNumber)

class Student(Person):
    #   Class Constructor
        def __init__(self,firstName,lastName,idNum,scores):
            super().__init__(firstName,lastName,idNum)
            self.scores=scores

        def calculate(self):
                avg=sum(self.scores)/len(self.scores)
                if avg>=90 and avg<=100:
                    return 'O'
                elif avg>=80 and avg<=90:
                    return 'E'
                elif avg>=70 and avg<=80:
                    return 'A'
                elif avg>=55 and avg<=70:
                    return 'P'
                elif avg>=40 and avg<=55:
                    return 'D'
                else:
                    return 'T'
            
line = input("Enter FirstName,LastName and ID number with space between them:").split()
firstName = line[0]
lastName = line[1]
idNum = line[2]
numScores = int(input("Enter number of scores:")) # not needed for Python
scores = list( map(int, input("Enter scores with space between them:").split()) )
s = Student(firstName, lastName, idNum, scores)
s.printPerson()
print("Grade:", s.calculate())