肉包子一个一块
class ShoppingCart(object):
"""Creates shopping cart objects
for users of our fine website."""
items_in_cart = {}
def __init__(self, customer_name):
self.customer_name = customer_name
def add_item(self, product, price):
"""Add product to the cart."""
if not product in self.items_in_cart:
self.items_in_cart[product] = price
print product + " added."
else:
print product + " is already in the cart."
def remove_item(self, product):
"""Remove product from the cart."""
if product in self.items_in_cart:
del self.items_in_cart[product]
print product + " removed."
else:
print product + " is not in the cart."
my_cart=ShoppingCart("wangweiwei")
my_cart.add_item("apple",12)
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