将装饰器应用于导入的功能？ [英] Applying a decorator to an imported function?

问题描述

我想导入一个函数：

from random import randint

然后应用一个装饰器：

and then apply a decorator to it:

@decorator
randint

我在想这是否有一些语法糖（比如我或者我必须这样做：

I was wondering if there was some syntactic sugar for this (like what I have above), or do I have to do it as follows:

@decorator
def randintWrapper(*args):
    return random.randint(*args)

推荐答案

<装饰器只是用一个装饰版本代替一个函数对象的语法糖，其中装饰只是调用（传入原始函数对象）。换句话说，语法：

Decorators are just syntactic sugar to replace a function object with a decorated version, where decorating is just calling (passing in the original function object). In other words, the syntax:

@decorator_expression
def function_name():
    # function body

转换为：

translates to:

def function_name():
    # function body
function_name = decorator_expression(function_name)

在您的情况下，您可以手动应用装饰器：

In your case, you can apply your decorator manually instead:

from random import randint

randint = decorator(randint)

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