On 14 February 2014 18:04, Chris Withers <ch...@simplistix.co.uk> wrote: > > Am I missing something? How can I get this method down to a sane size?
The easiest way is usually to normalise the attributes to a sensible numeric value depending on where you want "None" to sort (positive and negative infinity floating point values often work well in the case of numeric data, but a custom AlwaysLess or AlwaysGreater type works for arbitrary data). You can either do that dynamically, or else cache the normalised values when the attributes are set. Python 2 used to guess, Python 3 makes developers decide how they want None to be handled in the context of ordering operations. Cheers, Nick. -- Nick Coghlan | ncogh...@gmail.com | Brisbane, Australia _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
