passing by refference

[Tim Peters]

[Doug Quale]
> ...
> If you don't agree that this describes call-by-value argument passing,
> tell us what Python does differently.  Be very specific.

See Henry Baker's paper (referenced earlier;

     http://home.pipeline.com/~hbaker1/ObjectIdentity.html

) for why a venerable Lisp expert believes "call by value" is incorrect even
for describing Lisp -- but he doesn't mean the same thing by "call by value"
that you mean.  That alone doesn't mean he's wrong either <wink>.