[Python-Dev] nonstandard behavior of reflected functions

Nick Coghlan ncoghlan at gmail.com
Mon Oct 19 03:15:38 CEST 2009

Ehsan Amiri wrote:
> I see the same behaviour, moreover when I change class Quantity to a
> classic class (removing '(object)'), it works as expected. (i.e.
> Quanitity.__add__() is called after the fourth print. I run Python 2.6.2
> on Vista.

Darren found the explanation further down the page he was reading - the
fact that the right operand is an instance of a subclass of the left
operand's class makes a difference.


Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia

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