ЯсноПонятно24

def calculate_total_cost(products):
    total_cost = 0
    for product in products:
        price = product.get('price', 0)
        quantity = product.get('quantity', 0)
        total_cost += price * quantity
    return total_cost

# Пример использования
products = [
    {'name': 'apple', 'price': 1.5, 'quantity': 2},
    {'name': 'banana', 'quantity': 3},
    {'name': 'orange', 'price': 2.0}
]

total_cost = calculate_total_cost(products)
print(total_cost)  # Выведет: 7.5