Question

Is it possible to decorate method arguments? Something like:

class SampleEntity (BaseEntity) :
    def someOperation (self, @Param(type="int", unit="MB")i, str) :
        pass

Basically I want the developer to be able to specify metadata about the class, properties, methods, arguments etc which I can process later on. For class and methods I could use decorators. So I was wondering how to do it for method arguments.

Thanks,
Litty

Answer 1

No, but in Python 3 you can use annotations.

def func(arg: Param(type = 'int', unit = 'MB')):
   pass

Annotations can hold any information you want, language doesn’t define what should go there. You can access them with func.__annotations__ dict later.