[Python-Dev] PEP 457: Syntax For Positional-Only Parameters (original) (raw)

Paul Moore p.f.moore at gmail.com
Wed Oct 9 17:07:36 CEST 2013

On 9 October 2013 15:53, Larry Hastings <larry at hastings.org> wrote:

My goal in writing the PEP was to codify existing practice, which meant reflecting these (annoying!) corner cases accurately.

That's fair. But I would argue that we very much don't want to encourage anyone ever duplicating that practice with new functions, which is why I don't think that this syntax should ever be implemented in the form described in Python. OTOH, there may be reasons in the future for wanting to support positional-only syntax in Python - that design should not be constrained by the need (which is Argument Clinic specific, AIUI) to cater for existing builtins' practice.

Paul

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