Stocking Out-getting error


#1


https://www.codecademy.com/courses/python-beginner-en-IZ9Ra/2/3?curriculum_id=4f89dab3d788890003000096

< calling compute_bill with a list containing 1 apple, 1 pear and 1 banana resulted in None instead of the correct 7>


shopping_list = ["banana", "orange", "apple"]

stock = {
    "banana": 6,
    "apple": 0,
    "orange": 32,
    "pear": 15
}
    
prices = {
    "banana": 4,
    "apple": 2,
    "orange": 1.5,
    "pear": 3
}

# Write your code below!
def compute_bill(food):
    total=0
    for food in stock:
        if stock[food]>0:
            total=total+prices[food]
    print total
    stock[food]=stock[food]-1


#2

your function should return the total cost, not print it

also, why do you loop over stock? Please explain

Why are you reducing stock outside the loop? Please explain


#3

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