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四年前关闭了。
我试图写一个程序，将接收输入，运行一些计算，并将它们存储在一个列表中，然后添加列表的元素。但我不断得到错误：wh_list = wh_list.追加（wh）属性错误：“NoneType”对象没有属性“append”
代码：

wh_list = []
u = len(wh_list)
if u <= 1:
    while True:
        inp = input("Y or N:")
        B = int(input("B value:"))
        C = int(input("C value:"))
        D = int(input("D value:"))
        wh = B * C * D
        wh = int(wh)
        wh_list = wh_list.append(wh)
        if inp == "Y":
            break
else:
    Ewh = sum(wh_list)
    print(Ewh)