> We seem to be turning into comp.lang.python here. :-(

Good point, I'll try my chance over there.

> Sounds like you want to use an exception and have caller catch an
> exception of a particular type and then return the value in the
> exception object.

In fact, I don't want 'called' to throw an exception and 'caller' to
catch it (as suggested by Malcolm), nor do I want 'caller' to test the
result of 'called' (as suggested by Evert). I would like things to
remain completely transparent for 'caller', so the power remains in
the hands of 'called'.

I'll ask on the Python group and will post an answer here if I get
something interesting, just for the sake of closing this post.

Thanks!

Julien
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