shopping_car练手程序

#__author__:"Jay guo"
#__date__:2016/8/22
counter = 0
a = [["iphone",5800],["mac book",9000],["coffee",32],["python book",80],["bicyle",1500]]
for i in a:
    counter += 1
    print (counter,end = ".")
    for j in i:
        print (j,end = " ")
    print ()
  #  print (counter,".",i)
salary = int(input("input your salary>>: "))
list = []
list1 = []
center = salary
while True:
    choice = input("plz choice >>:")
    if choice.isdigit():
        choice = int(choice)
        if(choice > len(a)):
            print ("没有该商品")
            continue
        if  a[choice-1][1]> center:
            print ("余额不足",center-a[choice-1][1],"元")
        else:
            center = center - a[choice-1][1]
            list.append(a[choice-1])
            print ("您的%s购买成功还余%d元" %(a[choice-1][0],center))
    elif choice == "quit":
        for j in list:
            if list.count(j) > 1:
                for i in list1:
                    if i == j:
                        break
                else:
                    print (j,list.count(j))
                list1.append(j)
            else:
                print (j,1)
        print ("所剩余额为：%s 元" %center)
        break
    else:
        print ("输入格式错误")