__eq__ and __ne__

Jeremy Hylton jeremy at alum.mit.edu
Tue Jul 8 18:21:29 CEST 2003

On Tue, 2003-07-08 at 12:08, Shane Hathaway wrote:
> Tim Peters wrote:
> > Since the richcmp operators aren't constrained to return scalars, an attempt
> > to define one in terms of the others seemed futile.  Instead they're 6
> > independent methods.
> Ok.  Thanks for finding the docs.  I guess I'll stick to my boilerplate 
> code.  I think some guidance should be added to the Python docs, though, 
> explaining that whenever you define __eq__, you very likely ought to 
> define __ne__ also.

I believe C++ has the same behavior when you overload logical
operators.  So at least people familiar with the same behavior in other
languages won't be surprised.


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