[Import-sig] Re: Long-awaited imputil comments
Guido van Rossum
Wed, 16 Feb 2000 15:54:27 -0500
> > > > I think we need a hook here so that Marc-Andre can implement
> > > > walk-me-up-Scotty; or Tim Peters could implement a policy that
> > > > requires all imports to use the full module name, even from
> > > > within the same package.
> Hmm, after thinking about it, I can't see these as "import
> hooks". At least, if you are installing these system-wide,
> these are changing the semantics of "import", not grabbing
> code from strange places, or transforming .xyz files into
> Python or ...
> I can have working code; now add some mxX or TP extension
> and have existing code (not using the new extension) break.
> OTOH, if MAL / TP provides an importer, and fixes that
> importer to follow their preferred policy, that's fine; and I can
> pretend that that's an "import hook".
Fortunately, the proposed solution (reintroducing __domain__) lets
this be solved on a per-package basis.
Still, I want to be able to subclass ImportManager to change the
global policy; supporting __domain__ is an example of such a change of
policy. I also want to avoid having to reimplement the policy, with
all its warts, in freeze.
--Guido van Rossum (home page: http://www.python.org/~guido/)