Python3.6全栈开发实例[012]

12.输出商品列表，用户输入序号，显示用户选中的商品(升级题)
商品列表：
goods = [{"name": "电脑", "price": 1999},
{"name": "鼠标", "price": 10},
{"name": "游艇", "price": 20},
{"name": "美女", "price": 998}, ]
要求:
1：页面显示 序号 + 商品名称 + 商品价格，如：
1 电脑 1999
2 鼠标 10
…
2：用户输入选择的商品序号，然后打印商品名称及商品价格
3：如果用户输入的商品序号有误，则提示输入有误，并重新输入。
4：用户输入Q或者q，退出程序。

lst = []
shopcars = {}
while 1:
    goods = [{"name": "电脑", "price": 1999},
     {"name": "鼠标", "price": 10},
     {"name": "游艇", "price": 20},
     {"name": "美女", "price": 998}, ]
    for i,j in enumerate(goods,1):
        print(i,j['name'],j['price'])
        lst.append(j)
    choice = input('请输入商品编号选择商品:')
    if choice.isdigit():
        choice = int(choice)
        pname = lst[choice-1]['name']
        pprice = lst[choice-1]['price']
        print(pname,pprice)
        if pname in shopcars:
            shopcars[pname]['amount'] +=1
        else:
            shopcars[pname] = {'pprice': pprice, 'amount': 1}
    elif choice.upper() == 'Q':
        print(shopcars)
        break
    else:
        print('商品序号有误!')