[Python-Dev] Adding types.build_class for 3.3

[Nick Coghlan]

On Mon, May 7, 2012 at 11:42 PM, Hrvoje Niksic <hrvoje.niksic at avl.com> wrote:
> On 05/07/2012 02:15 PM, Nick Coghlan wrote:
>>
>> Benjamin's suggestion of a class method on type may be a good one,
>> though. Then the invocation (using all arguments) would be:
>>
>>   mcl.build_class(name, bases, keywords, exec_body)
>>
>> Works for me, so unless someone else can see a problem I've missed,
>> we'll go with that.
>
>
> Note that to call mcl.build_class, you have to find a metaclass that works
> for bases, which is the job of build_class.  Putting it as a function in the
> operator module seems like a better solution.

No, the "mcl" in the call is just the designated metaclass - the
*actual* metaclass of the resulting class definition may be something
different. That's why this is a separate method from mcl.__new__.

Cheers,
Nick.

-- 
Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia