class operations:
    def individualCategoryCalculator(testPoints, testOutOf, categoryPoints, categoryOutOf):
        return ((categoryPoints + testPoints) / (categoryOutOf + testOutOf)) * 100
 
    def totalClassGrade():
        grades = []
        categoryWeight = []
        finalGrade = 0
        working = True
        while working:
            answer = input("What should I do? ")
            trueAnswer = answer.lower()
            if (trueAnswer == "add"):
                x = float(input("What is the grade? "))
                grades.append(x)
                x = float(input("What is the category weight? ")) / 100
                categoryWeight.append(x)
            if (trueAnswer == "print"):
                print(grades)
                print(categoryWeight)
            if (trueAnswer == "total"):
                for x in range(0, len(grades)):
                    finalGrade = finalGrade + (grades[x] * categoryWeight[x])
                print(finalGrade)  
                working = False
        
working = True
while working:
    answer = input("What would you like to do? ")
    trueAnswer = answer.lower()
    if (trueAnswer == "individual"):
        x = str(operations.individualCategoryCalculator(int(input("What did you get on the test? ")), int(input("Out of What? ")), int(input("How many points do you have in the category? ")), int(input("How many total points in category? "))))
        print("The Category grade is now %s" %(x))
        
    if (trueAnswer == "total"):
        operations.totalClassGrade()
        
    if (trueAnswer == "end"):
        working = False