[Python-Dev] operator precedence of __eq__, __ne__, etc, if both object have implementations
Chris Withers
chris at simplistix.co.uk
Tue Sep 22 16:06:42 CEST 2009
Hi All,
I didn't see any docs on this:
http://docs.python.org/reference/datamodel.html?highlight=__eq__#object.__eq__
Where are the specifications on what happens if two objects are compared
and both have implementations of __eq__? Which __eq__ is called? What
happens if the first one called returns False? Is the second one called?
What is one implements __eq__ and the other __ne__?
If I've missed something, please point me in the right direction.
To all those about to tell me to go read the source: that's not good
enough here. I'm hoping there *are* "official" rules for how these
interact and they just need better linking in, otherwise, I worry that
IronPython could do one thing, Jython another and CPython a third...
cheers,
Chris
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- http://www.simplistix.co.uk
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