Dear all, I would like to know your opinion on how to address a specific need of the new PEP 637:
https://github.com/python/peps/blob/master/pep-0637.txt Such PEP would make a syntax like the following valid obj[2, x=23] obj[2, 4, x=23] Which would resolve to a call in the form type(obj).__getitem__(obj, 2, x=23) type(obj).__getitem__(obj, (2, 4), x=23) and similar for set and del. After discussion, we currently have one open point we are unsure how to address, that is what to pass when no positional index is passed, that is: obj[x=23] We are unsure if we should resolve this call with None or the empty tuple in the positional index: type(obj).__getitem__(obj, None, x=23) type(obj).__getitem__(obj, (), x=23) You can see a detailed discussion in the PEP at L913 https://github.com/python/peps/blob/1fb19ac3a57c9793669ea9532fb840861d4d7566/pep-0637.txt#L913 One of the commenters on python-ideas reported that using None might introduce an issue in numpy, as None is used to create new axes, hence the proposal for rejection of None as a solution. However, we are unsure how strongly this would affect numpy and similar packages, as well as what developer will find more natural to receive in that case. We would like to hear your opinion on the topic. Thank you for your help. -- Kind regards, Stefano Borini _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@python.org https://mail.python.org/mailman/listinfo/numpy-discussion
