[Python-Dev] New and Improved Import Hooks

[Sjoerd Mullender]

On Thu, Dec 5 2002 Martin v. =?iso-8859-15?q?L=F6wis?= wrote:

> "M.-A. Lemburg" <mal@lemburg.com> writes:
> 
> > Well, that's what I tried to solve in the sketch I posted earlier
> > (slightly modified to meet Fredrik's requirements):
> > 
> > 1. User programs register import hooks based on suffixes which are
> >     used to match the entries in sys.path, e.g. ".zip" for
> >     ZIP importers (caching could help in improving the mapping
> >     performance; this is where the auxilliary dictionary comes into
> >     play).
> 
> I don't like this idea. How could I then make a HTTP importer, where
> no suffix is available?

Instead of a regexp, I would suggest using a function that returns
true if the hook can deal with the path component.  This function
could then use a regexp to determine whether it can.  But this is
about the same complexity as just calling the hook and let it return
quickly if it can't deal with the path component.

So this step would just become:
1. User programs register import hooks.

-- Sjoerd Mullender <sjoerd@acm.org>