如何使用字符串列表作为变量名/对象属性？

Question

我想做的是在创建对象时将字符串列表用作对象的属性。我看到另一个主题讨论通过创建字典将字符串列表用作变量，但这似乎将字符串保留为字符串，我认为这对我不起作用。这是我想要的工作。这是一个DnD练习：

abilities = ['strength', 'dexterity', 'constitution', 'intelligence', 'wisdom', 'charisma']


class Character:
    def __init__(self):
        for ability in abilities:
            self.ability = roll_ability()       #this is a call to an outside function

谢谢

Answer 1

因为这是D&；D游戏，您可能也需要动态访问能力分数；例如，一个saving_throw方法可以使用您用来滚动saving throw的能力的名称。在这种情况下，使用字典而不是单独的属性通常是更好的设计：

class Character:
    def __init__(self):
        self.abilities = { ability: roll_ability() for ability in abilities }

    def get_ability_score(self, ability):
        return self.abilities[ability]

    def saving_throw(self, ability, bonus=0):
        return roll_dice(20) + self.abilities[ability] + bonus

Answer 2

这是避免使用全局变量的另一个选择：

class Something:

    def __init__(self, *args):
        for ability in args:
            setattr(self, ability, roll_ability())


abilities = ['strength', 'dexterity', 'constitution', 'intelligence', 'wisdom', 'charisma']
s = Something(*abilities)

Answer 3

使用setattr：

def __init__(self):
    for ability in abilities:
        setattr(self, ability, roll_ability())