[Tutor] Help...

[Christian Witts]

Ryan V wrote:
> For this source code, i am getting some errors, and not sure how to 
> fix it, as i am returning all the values. it is telling me that there 
> is no value for the variables i am returning.  any help is greatly 
> appreciated!
> Source
> #main function
> def main():
>     print 'The menu is:'
>     print 'Yum Yum Burger for $0.99'
>     print 'Grease Yum Fries for $0.79'
>     print 'Soda Yum For $1.09'
>     mealOrder = input_meal()
>     burgerPrice = input_burger()
>     friesPrice = input_fries()
>     sodaPrice = input_soda()
>     mealEnd = input_mealEnd()
>     calc_total(burgerPrice, friesPrice, sodaPrice)
> #    print_info(total)
>
> def input_meal():
>     print 'If you want the Yum Yum Burger please press 1'
>     print 'If you want the Grease Yum Fries please press 2'
>     print 'If you want the Soda Yum please press 3'
>     print 'If you entered no instead of yes just hit 4'
>     mealOrder = input('Enter Now - ')
>     if mealOrder == '1' :
>         input_burger()
>     elif mealOrder == '2' :
>         input_fries()
>     elif mealOrder == '3' :
>         input_soda()
>     elif mealOrder == '4' :
>         calc_total(burgerPrice, friesPrice, sodaPrice)
>        
> def input_burger():
>     amountBurger = input('How many burgers would you like?')
>     burgerPrice = amountBurger * 0.99
>     input_mealEnd()
>     return burgerPrice
>    
> def input_fries():
>     amountFries = input('How many Fries would you like?')
>     friesPrice = amountFries * 0.79
>     input_mealEnd()
>     return friesPrice
>    
> def input_soda():
>     amountSoda = input('How many sodas would you like?')
>     sodaPrice = amountSoda * 1.09
>     input_mealEnd()
>     return sodaPrice
>    
> def input_mealEnd():
>     mealEnd = raw_input('Would you like to end your order? (Enter yes 
> or no)')
>     if mealEnd == 'yes' :
>         calc_total(burgerPrice, friesPrice, sodaPrice)
>     elif mealEnd == 'no' :
>         input_meal()
>
> #Calculation of meal cost
> def calc_total(burgerPrice, friesPrice, sodaPrice):
>     totalFood = burgerPrice + friesPrice + sodaPrice
>     totalTax = totalFood * .06
>     total = totalTax + totalFood
>     print 'The total price for food is $', totalFood
>     print 'The Tax is $', totalTax
>     print 'The total is $', total
> #Displays total, and what you ordered
> #def print_info(total):
> #    print 'The meal price is $', total
>
> #call main function
> main()
>  and here is the output i am getting
>
> The menu is:
> Yum Yum Burger for $0.99
> Grease Yum Fries for $0.79
> Soda Yum For $1.09
> If you want the Yum Yum Burger please press 1
> If you want the Grease Yum Fries please press 2
> If you want the Soda Yum please press 3
> If you entered no instead of yes just hit 4
> Enter Now - 1
> How many burgers would you like?2
> Would you like to end your order? (Enter yes or no)no
> If you want the Yum Yum Burger please press 1
> If you want the Grease Yum Fries please press 2
> If you want the Soda Yum please press 3
> If you entered no instead of yes just hit 4
> Enter Now - 2
> How many Fries would you like?2
> Would you like to end your order? (Enter yes or no)no
> If you want the Yum Yum Burger please press 1
> If you want the Grease Yum Fries please press 2
> If you want the Soda Yum please press 3
> If you entered no instead of yes just hit 4
> Enter Now - 3
> How many sodas would you like?2
> Would you like to end your order? (Enter yes or no)yes
> *Traceback (most recent call last):
>   File "...", line 74, in <module>
>     main()
>   File "...", line 16, in main
>     sodaPrice = input_soda()
>   File "...", line 51, in input_soda
>     input_mealEnd()
>   File "...", line 57, in input_mealEnd
>     calc_total(burgerPrice, friesPrice, sodaPrice)
> NameError: global name 'burgerPrice' is not defined*
> ------------------------------------------------------------------------
>
> _______________________________________________
> Tutor maillist  -  Tutor at python.org
> http://mail.python.org/mailman/listinfo/tutor
>   
You're caliing calc_total() in your input_mealEnd() function and in the 
scope of that function there are no variables names burgerPrice, 
friesPrice or sodaPrice.

-- 
Kind Regards,
Christian Witts