习题求解
n = int(input("输入商品数："))d = {} #字典
s = 0 #总价
h = -1 #最高商品价值
name = None #最高商品价值的名字
for i in range(n):
sname = input(f"输入第{i + 1}个商品的名字：")
price = int(input("输入这个商品的价格："))
s += price
d = price
if price > h:
h = price
name = sname
print("商品字典：", d, "价格平均值：{:.2f}".format(round(s / n, 2)), "价格最高商品名：", name, sep = "\n")
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