通过给定文本构建数据类型，并计算总价

lst = []
# sum = 0
with open("a",mode="r",encoding="utf-8") as f:
    for line in f:
        dic = {}
        s = line.strip().split(" ")
        dic["name"] = s[0]
        dic["price"] = s[1]
        dic["amount"] = s[2]
        lst.append(dic)
        # sum = sum + int(s[1])*int(s[2])
print(lst)
# print(sum)
sum = 0
for i in lst:
    sum = sum + int(i["price"])*int(i["amount"])
print(sum)