Simple Shopping Cart

Simple Shopping Cart, ideal for use with Django.

Created as a simple thought exercise on a lonely Friday evening. Could be suitable for use in production, but it was more about me learning list comprehension and generators a few years ago.

The most recent updates were about handling Python 3.

Tested versions

• Python 2.7.9
• Python 3.3.5
• Python 3.4.2
• Python 3.5.0

How to use

Cart takes any generic product - could be a Django model, could be anything. The product must have two attributes at the very least:

product_id

integer

price

float/integer

class Product(object):
    def __init__(self, product_id, price):
        self.product_id = int(product_id)
        self.price = float(price)

# Initialising
from cart import Cart
cart = Cart()

# Adding products
cart.add_product(product)  # Add product
cart.add_product(product, 5)  # Add product, with a quantity for 5

# Updating products
cart.update_quantity(product, 5)  # Adjust the quantity of a product
cart.remove_product(product)  # Remove a product

# You can also view some info about the cart
cart.num_items()  # Sum of all item's quantities in the cart
cart.sub_total()  # Sum of all product's prices

# You can also save to a Django session
cart.save(self.request.session)

Tests

See test.py for full usage

Note: Mock must be installed to run UnitTests on Python 2.7