You mean the sentinel is called 'undef'? With undef-coallescing operators? On Tue, May 26, 2020, 2:14 AM Greg Ewing <greg.ew...@canterbury.ac.nz> wrote:
> Wild idea: Instead of sentinels, have a way of declaring optional > arguments with no default, and a way of conditionally assigning a > value to them if they are not bound. > > E.g. > > def order(eggs = 4, spam =): > spam ?= Spam() > > Here the '?=' means "if spam is not bound, then evaluate the > rhs and assign it, otherwise do nothing." > > -- > Greg > _______________________________________________ > Python-ideas mailing list -- python-ideas@python.org > To unsubscribe send an email to python-ideas-le...@python.org > https://mail.python.org/mailman3/lists/python-ideas.python.org/ > Message archived at > https://mail.python.org/archives/list/python-ideas@python.org/message/4C2WQRFTLBXXQ32IJTWJA4QQKYKBISRC/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
_______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/XWBH67GJU2BZ5SKOG4F7UN5SO32564JR/ Code of Conduct: http://python.org/psf/codeofconduct/
