On Fri, Sep 25, 2020 at 1:36 PM MRAB <pyt...@mrabarnett.plus.com> wrote:
> It currently doesn't support multiple indexes, so there's no distinction > between one index that's a 2-tuple and 2 indexes: d[(1, 2)] == d[1, 2]. > yeah, but one index isn't in a 1-tuple (much discussed on this thread), so now we have the someone awkward (if consistent with the language): obj[i] --> __getitem__(i) obj[i, j] --> __getitem__((i, j)) if make a default an empty tuple, then we'll have: obj[] --> __getitem__(()) obj[i] --> __getitem__(i) obj[i, j] --> __getitem__((i, j)) Or would the default only be used if there were one or more keyword arguments? if so, we'd still have: obj[keyword=k] --> __getitem__((), keyword=k) obj[i, keyword=k] --> __getitem__(i, keyword=k) obj[i, j, keyword=k] --> __getitem__((i, j), keyword=k) Which is, shall we say, not ideal. -CHB > Using an empty tuple as the default index isn't that bad, assuming > you're going to allow a default. > _______________________________________________ > 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/MN7MOV4EL5K4MWGGSAKWZYLFZQFTI3Y2/ > 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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