#!/usr/bin/env python

#
# a very simple cash register program
#
# written by e.bonakdarian   oct 2010
#

STATE_TAX = 0.08


##########################################################
def banner():
    print '-----------------------------------'
    print '  your own fun banner here'
    print '-----------------------------------'


##########################################################
def computeTotals(number, item_price, description, tax_rate):
    # compute tax/totals and print out a bill
    
    sub_total = number * item_price

    # computes tax due based on subtotal and tax rate
    tax = sub_total * tax_rate  # is this tax variable really needed?

    # prints the bill using all available information
    print
    print 'Item      :  %s' % description
    print 'Number    :  %4d' % number
    print 'Item Price:  $%7.2f' % item_price 
    print 'SubTotal  :  $%7.2f' % sub_total
    print 'Tax       :  $%7.2f' % tax
    print '====================='
    print 'Total     :  $%7.2f' % (sub_total + tax)


##########################################################
def processPurchase():
    # get the inputs from the user and computes and dispaly totals

    print '\nProgram calculates total cost of same items purchased'
    print 'state tax is %d percent.\n' % (STATE_TAX * 100)
    
    description=raw_input('Enter item description: ')
    number = input('Number of items purchased? ')
    item_price = input('Price per item? ')

    computeTotals(number, item_price, description, STATE_TAX)    


##########################################################
def main():
    # driver for program
    banner()

    processPurchase()
    print
    processPurchase()

    banner()
    
main()