On Thu, Apr 2, 2020 at 12:43 PM Paul Moore <p.f.moore@gmail.com> wrote:
On Thu, 2 Apr 2020 at 19:20, Guido van Rossum <guido@python.org> wrote:
> Since last fall's core sprint in London, Pablo Galindo Salgado, Lysandros Nikolaou and myself have been working on a new parser for CPython. We are now far enough along that we present a PEP we've written:
> https://www.python.org/dev/peps/pep-0617/
> Hopefully the PEP speaks for itself. We are hoping for a speedy resolution so we can land the code we've written before 3.9 beta 1.

Excellent news! One question - will there be any user-visible change
as a result of this PEP other than the removal of the "parser" module?
From my quick reading of the PEP, I didn't see anything, so I assume
the answer is "no".

I suppose it depends on how deep you dig, but the intention is that the returned AST is identical in each case. (We've "cheated" a bit by making a few small changes to the code that produces an AST for the old parser, mostly bugs related to line/column numbers.)

--Guido van Rossum (python.org/~guido)