Hackerrank Python(Basic) certification question. Needed to create a shopping cart

shoppingCart.py

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

item = Item('Bike', 1000)

class ShoppingCart:
    # Implement the ShoppingCart here
    def __init__(self):
        self.cart = {}
        pass
    
    def add(self, item):
        if (item.name in self.cart):
            self.cart[item.name] = [self.cart[item.name][0] + 1, self.cart[item.name][1] + item.price]
        else:
            self.cart[item.name] = [1, item.price]
    
    def total(self):
        count = 0
        for i in self.cart:
            # count += i[1]
            print(self.cart[i][1])
        return count
    def __len__(self):
        length = 0
        for i in self.cart:
            length += self.cart[i][0]
        return length