#_author_:"Bushii" #data:2018/2/20 print("*******************************") print("Welcome to the shopping system.") print("*******************************") money=int(input("Money:")) a=[5800,9000,30,80,1500] flag=True while flag: print("1.iphone 7:",a[0]) print("2.mac book:",a[1]) print("3.coffee:",a[2]) print("4.python book:",a[3]) print("5.bicyle:",a[4]) choice=int(input("You want to buy?Please enter number of commodity:")) if choice==1: if a[choice-1]>money: print("余额不足,还差",a[choice-1]-money) else: money-=a[choice-1] print("加入购物车成功,余额还有",money) elif choice==2: if a[choice-1]>money: print("余额不足,还差",a[choice-1]-money) else: money-=a[choice-1] print("加入购物车成功,余额还有",money) elif choice==3: if a[choice-1]>money: print("余额不足,还差",a[choice-1]-money) else: money-=a[choice-1] print("加入购物车成功,余额还有",money) elif choice==4: if a[choice-1]>money: print("余额不足,还差",a[choice-1]-money) else: money-=a[choice-1] print("加入购物车成功,余额还有",money) elif choice==5: if a[choice-1]>money: print("余额不足,还差",a[choice-1]-money) else: money-=a[choice-1] print("加入购物车成功,余额还有",money) while True: id_yesno=input("是否继续购物[y/n]?") if (id_yesno == ‘n‘): flag = False print("你的余额还剩",money) print("欢迎下次光临!") break elif(id_yesno==‘y‘): flag=True break else: print("Please enter y/n, other I don‘t understand")