Python @property 与方法性能 - 使用哪一个? [英] Python @property versus method performance - which one to use?

问题描述

我编写了一些使用对象属性的代码:

I have written some code that uses attributes of an object:

class Foo:
    def __init__(self):
        self.bar = "baz"
myFoo = Foo()
print (myFoo.bar)

现在我想做一些花哨的计算来返回bar.我可以使用 @property 使方法充当属性 bar，或者我可以重构我的代码以使用 myFoo.bar().

Now I want to do some fancy calculation to return bar. I could use @property to make methods act as the attribute bar, or I could refactor my code to use myFoo.bar().

我应该返回并为我所有的 bar 访问添加括号还是使用 @property?假设我的代码库现在很小，但由于熵它会增加.

Should I go back and add parens to all my bar accesses or use @property? Assume my code base is small now but due to entropy it will increase.

推荐答案

如果它在逻辑上是对象的一个​​属性/属性，我会说保留它作为一个属性.如果它很可能被参数化，我的意思是你可能想要调用 myFoo.bar(someArgs) 那么现在就硬着头皮让它成为一个方法.

If it's logically a property/attribute of the object, I'd say keep it as a property. If it's likely to become parametrised, by which I mean you may want to invoke myFoo.bar(someArgs) then bite the bullet now and make it a method.

在大多数情况下，性能不太可能成为问题.

Under most circumstances, performance is unlikely to be an issue.

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