[Python-Dev] == on object tests identity in 3.x (original) (raw)

Ethan Furman ethan at stoneleaf.us
Tue Jul 8 04:29:17 CEST 2014


On 07/07/2014 06:18 PM, Andreas Maier wrote:

Am 2014-07-08 01:50, schrieb Ethan Furman:

I never add eq to my classes until I come upon a place where I need to check if two instances of those classes are 'equal', for whatever I need equal to mean in that case. With that strategy, you would not be hurt if the default implementation raised an exception in case the two objects are not identical. ;-)

Yes, I would. Not identical means not equal until I say otherwise. Raising an exception instead of returning False (for eq) would be horrible.

-- Ethan



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