"@"装饰器(在Python中) [英] "@" Decorator (in Python)

问题描述

可能重复:
了解Python装饰器

Possible Duplicate:
Understanding Python decorators

类装饰器"/方法装饰器"(@)提供什么功能?换句话说，这与普通评论有什么区别?

What function does the "class decorator"/"method decorator" (@) serve? In other words, what is the difference between this and a normal comment?

此外，在方法前使用@previousMethod.setter时setter会做什么?谢谢.

Also, what does setter do when using @previousMethod.setter before a method? Thank you.

推荐答案

@decorator
def function(args):
    #body

仅仅是以下方面的语法糖:

is just syntactic sugar for:

def function(args):
    #body

function = decorator(function)

就是这样.

如您所见，装饰器被调用，所以它绝不是注释.

As you see, the decorator gets called, so it's by no means a comment.

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