9. True and False

DrZhang

There's a special value that's neigher a string nor a number: that is True.

There are no quotes around it, and it's not a numeric value.

True is great for situations like checking if a feature is on or if data is available. We can see it here when we set is_cold to True.

is_cold = True
is_cold
True

DrZhang

有一种特殊的值，它既不是字符串也不是数字：那就是 True。它没有引号，也不是数值。True 非常适合用在检查某个功能是否开启或数据是否可用的情况。当我们将 is_cold 设置为 True 时，就可以看到这种用法。