Hi, On Wed, 29 May 2019 at 08:07, Greg Ewing <greg.ew...@canterbury.ac.nz> wrote: > Nick Coghlan wrote: > > Having a single locals() call de-optimize an entire function would be > > far from ideal. > > I don't see what would be so bad about that. The vast majority > of functions have no need for locals().
You have the occasional big function that benefits a lot from being JIT-compiled but which contains ``.format(**locals())``. That occurs in practice, and that's why PyPy is happy that there is a difference between ``locals()`` and ``sys._getframe().f_locals``. PyPy could be made to support the full mutable view, but that's extra work that isn't done so far and is a bit unlikely to occur at this point. It also raises the significantly the efforts for other JIT implementations of Python if they have to support a full-featured ``locals()``; supporting ``_getframe().f_locals`` is to some extent optional, but supporting ``locals()`` is not. A bientôt, Armin. _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
