> On 22 Jun 2022, at 19:09, Paul Moore <p.f.mo...@gmail.com> wrote:
> 
> I suspect that you consider evaluation-on-reference as an important
> feature of your proposal, but could you consider explicit evaluation
> as an alternative? Or at the very least address in the PEP the fact
> that this would close the door on future explicit evaluation models?

I can think of ways to implement evaluation-on-reference, but they all have the 
effect of
making python slower.

The simple

        a = b

will need to slow down so that the object in b can checked to see if it need 
evaluating.

How will you avoid making python slower with this feature?

Barry

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