#!/usr/bin/python3__author__ = 'beimenchuixue'
__blog__ = 'http://www.cnblogs.com/2bjiujiu/'def shopping_car(shopping_message):shopping_list = []                      # 定义购物车ex = 'q'                                # 推出指令while True:                             # 一直检查用户输入是否合法，不合法让其重新输入try:saving = int(input('小伙子，请输入你的工资：'))except Exception as e:print(e)print('小伙子，别乱，乱来啊，我紧告你')continueelse:breakif saving <= 0:                         # 判断是否有工资exit('没钱来干啥啊')else:print('按q退出选购')                 # 打印退出提示while True:for i in shopping_message:              # 打印商品print(shopping_message.index(i), i)choice = input('请输入想选择商品的编号:')if choice == ex:                # 退出判断breakelse:try:                        # 判断用户选择的商品是否在商品中choice = int(choice)shopping_message[choice]except Exception as e:print(e)print('小伙子，这么年轻眼力就不行了？在输入一次：')continueelse:if shopping_message[choice][1] < saving:                # 判断用户工资是否大于商品print(shopping_message[choice])                     # 打印选择成功的商品shopping_list.append(shopping_message[choice][0])   # 吧商品加入购物车saving -= shopping_message[choice][1]               # 结算余额print('余额', saving)else:print('小伙子你工资少了点了，买点便宜点的吧')for i in shopping_list:                                     # 退出时候打印购买商品print(i)print('余额', saving)                                        # 打印余额if __name__ == '__main__':# 初始化商品列表shopping_message = [['iphone', 5800], ['mx6', 2000], ['pythonbook', 80], ['surface', 12000], ['coffee', 33]]shopping_car(shopping_message)