Day6_python(购物车代码2+流程图)

购物车流程图

 

# Welcome Python
sale=0#消费金额
product_list=[
      ('苹果',100),
      ('红苹果',200),
      ('青苹果',150),
      ('香蕉',100),
      ('小番茄',80),
  ]
#商品列表
exit_flag=False
shop_car =[]
#购物车
salary = input("每月生活费：")
if salary.isdigit():
    salary = int(salary)
    salary1=salary
    while not exit_flag:
        for index,iteam in enumerate(product_list):
            print(index,iteam)
        choice1=input("选择购买的商品：")
        if choice1.isdigit():
            choice1=int(choice1)
            if choice1<len(product_list) and choice1>=0:
                p_iteam=product_list[choice1]
                if p_iteam[1]<= salary:
                    shop_car.append(p_iteam)
                    salary-=p_iteam[1]
                    sale+=p_iteam[1]
                    #print("添加 %s 进购物车,你的余额为 \033[31;1m%s\033[0m"%(p_item,salary))
                    print("已添加 %s 到购物车,你的余额为 \033[31;1m%s\033[0m"%(p_iteam,salary))
                else:
                    print("\033[41;1m余额不足，剩余[%s]\033[0m"%salary)
            else:
                print("你选择的%s商品不存在！"%choice1)
        elif choice1 == 'q':
            print("购买商品列表".center(50,'*'))
            for p in shop_car:
                print(p)
            print("你一共需要支付",sale,"收您：",salary1,"找您：",salary)
            exit_flag=True
        else:
            print("请正确的输入商品编号，请重新输入！")
else:
      print("生活费请输入整数")