loops – Python shopping cart add to cart, get total get num items

loops – Python shopping cart add to cart, get total get num items

Here gives the time and I changed the code and now it is fully functional shopping cart

class Item(object): 
    def __init__(self, unq_id, name, price, qty):
        self.unq_id = unq_id
        self.product_name = name
        self.price = price
        self.qty = qty


class Cart(object):
    def __init__(self):
        self.content = dict()

    def update(self, item):
        if item.unq_id not in self.content:
            self.content.update({item.unq_id: item})
            return
        for k, v in self.content.get(item.unq_id).iteritems():
            if k == unq_id:
                continue
            elif k == qty:
                total_qty = v.qty + item.qty
                if total_qty:
                    v.qty = total_qty
                    continue
                self.remove_item(k)
            else:
                v[k] = item[k]

    def get_total(self):
        return sum([v.price * v.qty for _, v in self.content.iteritems()])

    def get_num_items(self):
        return sum([v.qty for _, v in self.content.iteritems()])

    def remove_item(self, key):
        self.content.pop(key)


if __name__ == __main__:
    item1 = Item(1, Banana, 1., 1)
    item2 = Item(2, Eggs, 1., 2)
    item3 = Item(3, Donut, 1., 5)
    cart = Cart()
    cart.update(item1)
    cart.update(item2)
    cart.update(item3)
    print You have %i items in your cart for a total of $%.02f % (cart.get_num_items(), cart.get_total())
    cart.remove_item(1)
    print You have %i items in your cart for a total of $%.02f % (cart.get_num_items(), cart.get_total())

And a output is:

You have 8 items in your cart for a total of $8.00
You have 7 items in your cart for a total of $7.00

for getTotal:

def getTotal(self):
    total = 0
    for item in self.list:
        name, price = item # or price = item[1]
        total = total + price

BTW, Your addItem and getNumItems method are also wrong. Since it is final, you should try to understand what you are working on.

loops – Python shopping cart add to cart, get total get num items