On Thu, Aug 27, 2020, 19:30 Joseph Martinot-Lagarde <[email protected]> wrote:
> As for foo[a=1, b=2], I'd propose to keep it a SyntaxError for now, and > always require an index. This way it can be changed later when people are > more used to the keyword args and have more ideas of what would be good as > a default argument. In the face of ambiguity, refuse the temptation to > guess ;) > This really wouldn't work for xarray, either. I think the simplest default value would be Ellipsis. So foo[a=1, b=2] would be equivalent to foo[..., a=1, b=2] But I don't see why this is a problem we have to deal with. The index argument can just not be passed at all, and it is up to the class developer to pick an appropriate sentinel if needed. >
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