# # 12 Stocking Out

#1

Can you please look at my code?

Oops, try again. calling compute_bill with a list containing 1 apple, 1 pear and 1 banana resulted in 9 instead of the correct 7

``````def compute_bill(food):
total = 0
for item in food:
if item in stock > 0:
total = total + prices[item]
stock[item] = stock[item] -1
print compute_bill(food)``````

#12 Stocking Out
#2

this:

``if item in stock > 0:``

won't work. you can get access how many items are left in stock through: `stock[item]`, hope that helps

#3

I don't know if I am better worse
def compute_bill(food):
total = 0
for item in food:
if item in stock[item] > 0:
total = total + prices[item]
stock[item] = stock[item] -1
print compute_bill(food)
Oops, try again. calling compute_bill with a list containing 1 apple, 1 pear and 1 banana caused the following error: argument of type 'int' is not iterable

#4

`stock[item]` gives you the number of items left in the stock, so all you have to do is check if it is greater then 0

`in` is used to check if a item is in a list or dictionary, not if the value is higher then zero

#5