script.py

hopping_list = ["banana","apple","orange", "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 x in food:
        if(stock[x]!=0):
            total=prices[x]+total
            stock[x]=stock[x]-1                   
    return total
    
print(compute_bill(shopping_list))
print(stock)