Answer to Question #158546 in Python for Sara

Question

Use the function written in the last lesson to calculate a student's GPA. Ask them how many classes they are taking, then ask them to enter the grades for

each class and if it is weighted.

Your program should then output the averaged GPA including the decimal

place.

Your main program must call the function.

Sample Run

HOw many classes are you taking? 7

Enter your Letter Grade: C

Is it weighted? (1 = yes) 1

Your GPA Score is: 3

Enter your Letter Grade: D

Is it weighted? (1 = yes) 0

Your GPA Score is: 1

Enter your Letter Grade: A

Is it weighted? (1 = yes) 1

Your GPA score is: 5

Enter your Letter Grade: B

Is it weighted? (1 = yes) 1

Your GPA Score is: 4

Enter your Letter Grade: C

Is it weighted? (1 = yes) 0

Your GPA Score is: 2

Your weighted GPA is a 3.0

Answer 1

import sys

def GPAcalc(grade, response):       #fun to calculate gpa by taking Grade and response

    if response != 1 and response != 0:

        return sys.exit("Invalid response!")

    elif grade=="A" and response==1:

        return 5

    elif grade=="A" and response==0:

        return 4

    elif grade=="B" and response==1:

        return 4

    elif grade=="B" and response==0:

        return 3

    elif grade=="C" and response==1:

        return 3

    elif grade=="C" and response==0:

        return 2

    elif grade=="D" and response==1:

        return 2

    elif grade=="D" and response==0:

        return 1

    elif grade=="F" and response==1:

        return 1

    elif grade=="F" and response==0:

        return 0

    else:

        return sys.exit("Invalid Grade!")

def main():

    sum = 0

    num_classes = int(input("How many classes are you taking? "))   #ask for number of classes

    for x in range(num_classes):        #for each class take input

        grade = input("Enter your Letter Grade: ") #take input grade

        resp = int(input("Is it weighted? (1 = yes) "))

        print("Your GPA score is: %.2f" %GPAcalc(grade, resp)) #print gpa

        sum += GPAcalc(grade, resp)

    print("You weighted GPA is a %.2f" %(sum/num_classes)) #print averaged gpa

if __name__ == "__main__":

    main()

    input()