On Tue, Mar 23, 2021 at 12:40 PM Skip Montanaro <skip.montan...@gmail.com> wrote:
> I've not attempted to make any changes to calling conventions. It > occurred to me that the LOAD_METHOD/CALL_METHOD pair could perhaps be > merged into a single opcode, but I haven't really thought about that. > Perhaps there's a good reason the method is looked up before the > arguments are pushed onto the stack (call_function()?). In a > register-based VM there's no need to do things in that order. > IIRC the reason is that Python's language reference promises left-to-right evaluation here. So o.m(f()) needs to evaluate o.m (which may have a side effect if o overrides __getattr__) before it calls f(). -- --Guido van Rossum (python.org/~guido) *Pronouns: he/him **(why is my pronoun here?)* <http://feministing.com/2015/02/03/how-using-they-as-a-singular-pronoun-can-change-the-world/> -- https://mail.python.org/mailman/listinfo/python-list
