python变量列表，按变量名称检索变量的值 [英] python list of variables, retrieve value of variable by variable name

问题描述

如果我有代码:

attRoll = 34
hit = False
dmg = 1

attSequence = [attRoll, hit, dmg]

print attSequence[dmg]

它打印hit(False)而不是dmg(1)的值，我可以通过输入以下内容来解决此问题:

it prints the value of hit (False) and not dmg (1), i can work around this by entering:

print attSequence[dmg+1]

我的问题:
-为什么不显示dmg的值?
- 是否有一种干净的方法(没有 +1)来检索命中值?

my questions:
-why doesn't it print the value of dmg?
-is there a clean way (without the +1) to retrieve the value of hit?

谢谢！

推荐答案

attSequence 是一个列表，而 dmg 是1，所以 attSequence [1] 的意思是给我 attSequence 中索引1的项目(第二个项目)".对于您正在做的事情，您可能需要词典(通常称为使用其他语言的地图)，它存储键/值映射，因此可以使用密钥"dmg":

attSequence is a list, and dmg is 1, so attSequence[1] means "Give me the item at index 1 (the second item) in attSequence". For what you're doing, you probably want a dictionary (usually called a map in other languages), which stores key/value mappings, so you could store the damage with a key of "dmg":

att = {
    "roll": attRoll,
    "hit": hit,
    "dmg": dmg
}
print att["dmg"]

您也可以在地图上放置文字，因此您可以这样做:

You can also put literals in a map, so you could do this:

att = {
    "roll": 34,
    "hit": False,
    "dmg": 1
}

这篇关于python变量列表，按变量名称检索变量的值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！