On Thu, Aug 20, 2020 at 9:16 PM Random832 <[email protected]> wrote:
> On Thu, Aug 20, 2020, at 20:09, Steven D'Aprano wrote: > > This is likely to be a rare and unusual case, but we don't want to break > > anyone who already has a dunder something like this: > > > > def __getitem__(self, index, extra=None) > > People do similar things with regular arguments to regular functions now, > trusting callers not to pass stuff in for no reason that will break the > function has been adequate there. > Yes, but this is a little different in that the [] operator will never pass in anything else, but if we make this change, then it might -- so this is a breaking change in this case. And having keywords in the square brackets pass keyword args to the dunder could,m in fact break this use case, whereas passing a new keyword_index object would not. But as I said in an earlier note -- having ezra keyword parameters on __getitem__ is an abuse of the system anyway, so I think it's OK to break that. -CHB > _______________________________________________ > Python-ideas mailing list -- [email protected] > To unsubscribe send an email to [email protected] > https://mail.python.org/mailman3/lists/python-ideas.python.org/ > Message archived at > https://mail.python.org/archives/list/[email protected]/message/XYYOGRZ673D4S7YLGGZBMB6QJ4CXNC3U/ > Code of Conduct: http://python.org/psf/codeofconduct/ > -- Christopher Barker, PhD Python Language Consulting - Teaching - Scientific Software Development - Desktop GUI and Web Development - wxPython, numpy, scipy, Cython
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