day2,

简单购物车，

 

#! /usr/bin/env python
import sys

shop_list = [('Iphone',5800),('Mac',9800),('Coffee',35),('Python',80),('Bike',800),]

salary = input("Input your salary:")

gowu_list = []
if salary.isdigit():
    salary = int(salary)
    while True:
        for index,item in enumerate(shop_list):
            print(index,item)
        user_choice = input("choose what you want to buy:")
        if user_choice.isdigit():
            user_choice = int(user_choice)
            if user_choice < len(shop_list) and user_choice >= 0:
                p_item = shop_list[user_choice]
                if p_item[1] <= salary:
                    gowu_list.append(p_item)
                    salary -= p_item[1]
                    print("Add %s into your gowulist ,your current balance is %s"%(p_item,salary))
                else:
                    print ("your current balance is %s,no more items to buy" % salary)
            else:
                print("the item %s is not exist!" % user_choice)
        elif user_choice == 'q':
            print ('-----shopping list-------')
            for p in gowu_list:
                print(p)
            print("your current balacne is:",salary)
            exit()
        else:
            print("invidid option")