id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
30333	__hash__  is not inherited from model.Model if __eq__ is defined	Adam Janik	Carlton Gibson	"In my model, that inherits directly from `models.Model`, I defined my own `__eq__`:
{{{
    class Meta:
        ordering = ('pk', )

    def __eq__(self, other):
        return self.as_data() == other.as_data()
}}}
What was strange, when updating to `2.2`, classes like above (and instances) do not have `__hash__` defined anymore.
{{{
>>> from myapp.account.models import Address
>>> Address.__hash__ is None
True
>>> import django
>>> django.VERSION
(2, 2, 0, 'final', 0)
}}}
while it was certainly present in `2.1`

{{{
>>> from myapp.account.models import Address
>>> Address.__hash__
<function Model.__hash__ at 0x7f013aee4d08>
>>> import django
>>> django.VERSION
(2, 1, 8, 'final', 0)
}}}

I am not sure if it is intended, as I did not find (or maybe missed) mentions about it in 2.2 release notes."	Bug	closed	Database layer (models, ORM)	2.2	Normal	duplicate		Sergey Fedoseev	Accepted	0	0	0	0	0	0