摘要：
# _Author:huang# date: 2017/11/28# 字符串'''print("hello" * 3)print("hello world"[2:])print("llo" in "hello world")print(123 in [1232,123,345])print("Hua 阅读全文
摘要：
# _Author:huang# date: 2017/11/26# 简单的购物车程序money = input("money:")product_list = [ ("Mac", 9000), ("Kindle", 300), ("Tesla", 8000), ("book", 60), ("bi 阅读全文