[Python-Dev] Re: @deprecated (was: Useful thread project for 2.5?)

[Reinhold Birkenfeld]

Nick Coghlan wrote:
> Raymond Hettinger wrote:
>> Decorators like this should preserve information about the underlying
>> function:
>> 
>> 
>>>    def deprecated(func):
>>>        """This is a decorator which can be used to mark functions
>>>        as deprecated. It will result in a warning being emmitted
>>>        when the function is used."""
>>>        def newFunc(*args, **kwargs):
>>>            warnings.warn("Call to deprecated function.")
>>>            return func(*args, **kwargs)
>> 
>>           newFunc.__name__ = func.__name__
>>           newFunc.__doc__ = func.__doc__
>>           newFunc.__dict__.update(func.__dict__)
>> 
>>>        return newFunc
> 
> A utility method on function objects could simplify this:
>    newFunc.update_info(func)

+1. This is really good for 90% of all decorator uses. But maybe a
better name should be found, perhaps "update_meta".

Reinhold

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