On Sun, 3 Dec 2017 15:06:02 -0800 Chris Barker <chris.bar...@noaa.gov> wrote: > I can't believe this hasn't been brought up before, but searching the web, > and python-ideas, and all the PEPs has found nothing (could be my lame > google-fu), so here goes: > > Recent python has moved toward a "key" function for customized sorting: > > list.sort(key=key_fun) > > key is also used (according to > https://docs.python.org/3.6/library/functools.html#functools.cmp_to_key) in: > > min(), max(), heapq.nlargest(), heapq.nsmallest(), itertools.groupby() > > with this fairly broad use, it seems it's becoming a fairly universal > protocol for ordering. > [...]
+1 from me. I would also be +1 on an optional class decorator that would generate all the ordering comparison methods (__lt__, etc.) based on the __key__ method definition. Regards Antoine. _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
