gwc = [["长袖", 588],["短T袖", 388],["7分裤", 299],["短裤", 199],["帽子", 200]]
selected = {}
total = 0
while True:
choice = input("输入你所选择的商品编号（0裤子，1卫衣，2长裤，3短裤，4帽子）:").strip()
if choice.isdigit():
choice = int(choice)
if choice < len(gwc) and choice >= 0:
product = gwc[choice]
if product[0] in selected:
selected[product[0]][1] += 1
else:
selected[product[0]] = [product[1], 1]
print("目前你的购物车商品：", selected)
elif choice == "buy":
print("---------你购买的商品如下---------")
print("id", "\t", "商品", "\t", "数量", "\t", "单价", "\t", "总价")
id_counter = 1
for key in selected:
print(id_counter, "\t",
key, "\t",
selected[key][1], "\t\t",
selected[key][0], "\t",
selected[key][1] * selected[key][0])
id_counter += 1
total+= selected[key][1] * selected[key][0]
print("总计价格为", total)
break
else:
print("请输入正确的商品编号！")