[Python-ideas] Re: PEP 671 (late-bound arg defaults), next round of discussion!

Ad 4) Wouldn't "<=" be a little more logical than "=>"? The perceived direction of the "flow" of the default value is exactly opposite, i.e., the default value is always evaluated and then put *into* the argument. For example: def bisect_right(a, x, lo=0, hi<=len(a), *, key=None):