simple_pos.py

class Product:
  def __init__(self, name, price):
    self.name = name
    self.price = price

class Cart:
  def __init__(self):
    self.items = []
  
  def add_item(self, product):
    self.items.append(product)
  
  def remove_item(self, product):
    self.items.remove(product)
  
  def total(self):
    total = 0
    for item in self.items:
      total += item.price
    return total

cart = Cart()
product1 = Product("Shampoo", 5.99)
product2 = Product("Toothpaste", 3.49)
cart.add_item(product1)
cart.add_item(product2)
print("Total: $", cart.total())