safely rename a method with a decorator

MRAB google at mrabarnett.plus.com
Mon Mar 23 00:38:31 CET 2009


Daniel Fetchinson wrote:
> I'd like to implement a decorator that would rename the method which
> it decorates. Since it's a tricky thing in general involving all sorts
> of __magic__ I thought I would ask around first before writing
> something buggy :)
> 
> It should work something like this:
> 
> class myclass( object ):
>     @rename( 'hello' )
>     def method( self ):
>         print 'ok'
> 
> # tests
> 
> inst = myclass( )
> inst.method( )       # raise an AttributeError
> inst.hello( )           # prints 'ok'
> myclass.method   # raise an AttributeError
> myclass.hello       # prints <unbound method myclass.hello>
> assert 'method' in dir( myclass ) is False
> assert 'hello' in dir( myclass ) is True
> 
> Any ideas?
> 
What is your use case? Why don't you just give the method the right name
in the first place? :-)



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