On Mon, Jan 11, 2010 at 4:11 PM, Barry Warsaw <ba...@python.org> wrote:
> As an example, the one library I've already ported used a metaclass. I don't
> see any way to specify that the metaclass should be used in a portable way.
> In Python 2.6 it's:
>
> class Foo:
> __metaclass__ = Meta
>
> and in Python 3 it's:
>
> class Foo(metaclass=Meta):
>
> 2to3 made that pain go away.
Actually there's a solution to this one too:
FooBase = Meta('FooBase', (), {})
class Foo(FooBase):
...
That should work in Python 2.X and 3.X.
I've got argparse running on Python 2.3-3.1, and the changes were
pretty easy. You can see them all in the revision here:
http://code.google.com/p/argparse/source/detail?r=12
I have aspirations of putting all of the tricks I learned up up on the
Wiki somewhere, but I just haven't had the time.
Steve
--
Where did you get that preposterous hypothesis?
Did Steve tell you that?
--- The Hiphopopotamus
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