Stephan Hoyer schrieb am 23.07.2018 um 18:01: > On Mon, Jul 23, 2018 at 4:24 AM Paul Moore wrote: > >> I thought the reason the proposal got nowhere was because it's pretty >> simple to define it yourself: >> >> >>> class SliceHelper: >> ... def __getitem__(self, slice): >> ... return slice >> ... >> >>> SH = SliceHelper() >> >>> SH[1::3] >> slice(1, None, 3) >> >> Did I miss something significant about why this wasn't sufficient? > > > I think a SliceHelper class like this is a reasonable solution, but there > would be a lot of value having it a standard place somewhere in the > standard library (e.g., operator.subscript). > > Both pandas and NumPy include this helper object under different names > (pandas.IndexSlice and numpy.index_exp / numpy.s_), but it would be > surprising/unexpected for pandas/numpy specific helpers to show up when not > using one of those libraries. I do the exact same sorts of indexing > manipulations with xarray, dask and TensorFlow. > > Given that this is basically a simple feature to make it easier to work > with Python syntax (so there's no danger it will change in the future), I > think there is a lot to be said for putting it in the standard library in > one place so it's obvious what to use and users don't have to relearn that > name for this object and/or reimplement it.
Please copy that comment into the ticket and ask for it to be reopened. https://bugs.python.org/issue24379 Stefan _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
