#!/usr/bin/evn python
# -*- coding:utf-8 -*-
# Author: Aron
import sys
commodity = ‘‘‘
1.蘋果 200
2.橘子 350
3.香蕉 500
4.水蜜桃 750
5.羅明 2000
‘‘‘
ShoppingCart = []
wages = int(input("你的工資:"))
while True:
    print(commodity)
    s1 = input("想購買的商品序號:")
    if s1 == ‘1‘:
        ShoppingCart.append([‘蘋果‘,‘200‘])
        continue
    elif s1 == ‘2‘:
        ShoppingCart.append([‘橘子‘,‘350‘])
        continue
    elif s1 == ‘3‘:
        ShoppingCart.append([‘香蕉‘,‘500‘])
        continue
    elif s1 == ‘4‘:
        ShoppingCart.append([‘水蜜桃‘,‘750‘])
        continue
    elif s1 == ‘5‘:
        ShoppingCart.append([‘羅明‘,‘2000‘])
        continue
    elif s1 == ‘Q‘:
        commodity1 = []
        for i in list(ShoppingCart):
            for i1 in list(i[::2]):
                commodity1.append(i1)
        for n in list(ShoppingCart):
            for n1 in list(n[1:2]):
                n1 = int(n1)
                wages = wages - n1
            for n in list(ShoppingCart):
                for n1 in list(n[1:2]):
                    n1 = int(n1)
                    wages = wages - n1
        if wages < 0:
            wages = input("你的余額已經不足,請重新選購。請重新輸入工資:")
            ShoppingCart = [ ]
            continue
        else:
            print("你夠買的商品為:",list(commodity1))
            print("你的余額為:%s" % wages)
            sys.exit()
    else:
        print("輸入錯誤,請重新輸入:")
        continue

購物車作業