On Wed, Jun 17, 2015, at 20:14, Chris Angelico wrote: > Mostly. That would imply that object is a mandatory parameter, which > AIUI isn't the case for Steven's edir. The downside of this kind of > signature is that it's hard to show the parameters that have unusual > defaults (either sentinel objects and custom code to cope, or they're > pulled out of *a or **kw).
My instinct would be to put =... for that case and explain in the documentation "If foo is not provided, [behavior]". Of course, that runs the risk of people thinking you actually mean Ellipsis, or that providing Ellipsis explicitly will give the same behavior as the default. -- https://mail.python.org/mailman/listinfo/python-list
