3 ways of sum cart total cost

shopping_cart_total_cost.py

shopping_cart = [
    {"item": "Apple", "price": 0.5, "quantity": 10},
    {"item": "Milk", "price": 1.5, "quantity": 2},
    {"item": "Bread", "price": 2.0, "quantity": 1}
]

def item_cost(item):
    return item["price"] * item["quantity"]

sum(map(item_cost, shopping_cart))

sum(map(lambda item: item["price"] * item["quantity"], shopping_cart))

sum([item["price"] * item["quantity"] for item in shopping_cart])