[Python-Dev] new syntax for wrapping (PEP 318)
Nick Coghlan
ncoghlan at iinet.net.au
Thu Feb 19 21:48:10 EST 2004
Phillip J. Eby wrote:
> At 06:48 PM 2/19/04 -0500, Jewett, Jim J wrote:
>
>> I think this may be one reason this didn't happen before;
>> wrapping is good, but it isn't entirely obvious how to
>> write it or exactly what it should mean. Given that, it
>> might be premature to use up the [] syntax.
>
>
> Well, I personally prefer the 'as' syntax for both class and function
> decorators.
>
> As for the semantics of class decorators, I would propose that they be
> identical to the semantics for function decorators. I don't think
> there's a point to adding more ways to spell '__metaclass__'. :)
Do you mean:
class decorated as decorator: pass
is equivalent to:
class decorated: pass
decorated = decorator(decorated)
?
And to get PJE's example to work would require a 'protocol decorator'
method such as 'IFoo_decorator' which took a class as an argument, told
PyProtocols about the class and the interface it supports, and then
returned either the original class, or a suitably changed version?
Regards,
Nick.
--
Nick Coghlan | Brisbane, Australia
Email: ncoghlan at email.com | Mobile: +61 409 573 268
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