[Tutor] using the loop function while another

[Amanda Colley]

Ok, here is my problem.  If a person has two  different people to order
books for, then when using the loop option, How do you add the two seperate
choices together for a  final total of books cost?

 another='y'
    while another=='y' or another=='Y':
        choice()
        another=input('Do you have another book to order for this student?
'+\
                      'Enter y for yes: ')

def choice():
    book=int(input('Enter the book chioce you want: ' +\
               'For Hardback Enter the number 1: ' +\
               'Paperback Enter the number 2: ' +\
               'Electronic Enter the number 3: '))
    num=int(input('Enter how many you need: '))
    cost=0
    if book==1:
        cost=79
    elif book==2:
        cost=49
    elif book==3:
        cost=19
    b_total=float(cost*num)
    print('Your book cost is $ ',format(b_total,'.2f'))

-- 
Amanda Colley
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