On Sat, Mar 22, 2014 at 2:13 PM, Nathaniel Smith <njs@pobox.com> wrote:
If you think of some other arguments in favor of left-associativity,
then please share!

I argued on python-ideas [1] that given the display properties of python lists and numpy arrays, vec @ Mat is more natural than Mat @ vec.  The latter comes from an old tradition of laying out vector components vertically in print and on a blackboard, but horizontal layout is more natural at python prompt and in a text editor.

[1] https://mail.python.org/pipermail/python-ideas/2014-March/027169.html