Question

[接受列表的玩家类别，然后继续寻找得分最高的玩家。]

class Player:

    def __init__(self, name, score):
        self.name = name
        self.score = score

    def best_score(list):
        i = 0

        while i < len(list):

            n = list[i]         #list[1] = (Bratt, 250)             #list[2] = Lisa 150
            s = list[i].score       #list 1. score = 250                #list[2].score = 150
            ace = list[0]           #homer 50                           #homer 50
            hs = 0

            if s > hs:          #if s(250>0):                       #if s(list[2].score) > hs(250): nothing suppsoed to happen
                ace = n         #ace(homer) = n(list1) aka bratt        #ace(bratt) != n because above
                hs = s          #hs(0) = s(list1) = 250             #hs(250) != list[2]150
                                #hs is now 250
            i += 1

        return ace

p1 = Player('Homer', 50) 
p2 = Player('Bart', 250) 
p3 = Player('Lisa', 150)

ls = [p1, p2, p3] 
best = Player.best_score(ls)

msg = '{} has the best score, with {} points!'.format(best.name, best.score) 
print(msg)  # Bart has the best score, with 250 points!

由于某些原因，我的代码未返回最高的球员得分和姓名。相反，它为我提供了最新的球员得分和姓名。我尝试通过循环检查它，但我哪里出错了仍然没有意义。

Answer 1

我们可以专注于代码的这一部分：

dfslices <- structure(list(X0035.A061 = c(19.48052, 2.96846, 0, 0), X0094.B116 = c(8.127208, 
9.069494, 2.237927, 0), X0314.A038 = c(36.8243243, 7.4324324, 
0.3378378, 1.6891892)), .Names = c("X0035.A061", "X0094.B116", 
"X0314.A038"), class = "data.frame", row.names = c("verylow", 
"low", "medium", "high"))

在撰写时，while i < len(list): hs = 0 if s > hs: ace = n hs = s与s > hs相同，因此条件对于列表中所有得分大于零的项目均为true。

要保持最大值，应该在进入循环之前定义一次，如下所示：

s > 0

通过此更改，hs = 0 while i < len(list): if s > hs: ace = n hs = s的值将在hs循环的迭代过程中保留，最后将保持最佳分数while。

Python对类实例的困惑

1 个答案: