[Python-Dev] Policy for making changes to the AST (original) (raw)

Glyph Lefkowitz glyph at twistedmatrix.com
Mon Apr 4 20:07:47 CEST 2011

On Apr 4, 2011, at 2:00 PM, Guido van Rossum wrote:

On Mon, Apr 4, 2011 at 10:05 AM, fwierzbicki at gmail.com <fwierzbicki at gmail.com> wrote:

As a re-implementor of ast.py that tries to be node for node compatible, I'm fine with #1 but would really like to have tests that will fail in testast.py to alert me! [and] On Mon, Apr 4, 2011 at 10:38 AM, Michael Foord <fuzzyman at voidspace.org.uk> wrote: A lot of tools that work with Python source code use ast - so even though other implementations may not use the same ast "under the hood" they will probably at least want to provide a compatible implementation. IronPython is in that boat too (although I don't know if we have a compatible implementation yet - we certainly feel like we should have one). Ok, so it sounds like ast is not limited to CPython?

Oh, definitely not. I would be pretty dismayed if tools like <http://bazaar.launchpad.net/~divmod-dev/divmod.org/trunk/files/head:/Pyflakes/> would not run on Jython & PyPy.

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