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Python合并多个装饰器小技巧

WBOY
Release： 2016-06-10 15:14:13
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django程序，需要写很多api，每个函数都需要几个装饰器，例如

复制代码 代码如下:

@csrf_exempt 
@require_POST 
def  foo(request): 
    pass 

既然那么多个方法都需要写2个装饰器，或者多个，有啥办法把多个合并成一行呢？
上面的函数执行过程应该是
复制代码 代码如下:

csrf_exempt(require_POST(foo)) 

修改成
复制代码 代码如下:

def compose(*funs): 
    def deco(f): 
        for fun in reversed(funs): 
            f = fun(f) 
        return f 
    return deco
 
函数改写成
复制代码 代码如下:

@compose(csrf_exempt, require_POST) 
def foo(request): 
    pass 

参考：
Can I combine two decorators into a single one in Python

Related labels：
python merge Decorator
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