[Python-Dev] New and Improved Import Hooks

[M.-A. Lemburg]

Martin v. L=F6wis wrote:
> "M.-A. Lemburg" <mal@lemburg.com> writes:
>=20
>=20
>>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).
>=20
>=20
> I don't like this idea. How could I then make a HTTP importer, where
> no suffix is available?

I first had "based on RE matching" in there, but Fredrik pointed
out that this would cause bootstrapping problems. The suffix
approach is easily implementable in plain C. Its open for discussion,
of course. If you have a better idea, please speak up. We could
also use a combined prefix/suffix approach so that URLs can
be recognized by prefix, while ZIP files are by suffix.

To answer your question: web-imports could use a special suffix
to signal their web-import nature (I'm sure you'll want to apply
some more security checks on such modules and or packages), e.g.
".py.web".

--=20
Marc-Andre Lemburg
CEO eGenix.com Software GmbH
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