On Tue, 30 Aug 2016 18:12:01 +0000 Brett Cannon <br...@python.org> wrote: > > Why not make it always a list? List objects are reasonably cheap in > > memory and access time... (unlike dicts) > > Because I would prefer to avoid any form of unnecessary performance > overhead for the common case.
But the performance overhead of iterating over a 1-element list is small enough (it's just an array access after a pointer dereference) that it may not be larger than the overhead of the multiple tests and conditional branches your example shows. Regards Antoine. _______________________________________________ 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
