模拟一个简单的购物清单管理系统

# 定义一个空的购物清单列表
shopping_list = []

# 函数：添加商品到购物清单
def add_to_shopping_list(item, price):
    shopping_list.append({'item': item, 'price': price})
    print(f'{item} added to shopping list.')

# 函数：显示购物清单
def show_shopping_list():
    if not shopping_list:
        print('Shopping list is empty.')
    else:
        print('Shopping List:')
        total = 0
        for index, item in enumerate(shopping_list):
            print(f'{index + 1}. {item["item"]} - ${item["price"]:.2f}')
            total += item['price']
        print(f'Total: ${total:.2f}')

# 函数：计算购物清单的总价
def calculate_total():
    total = sum(item['price'] for item in shopping_list)
    print(f'Total price of shopping list: ${total:.2f}')

# 函数：清空购物