False-positive PLW1641 when setting __hash__ = <ParentClass>.__hash__

[janosh]

with v0.3.4, ruff check t.py --select PLW1641 on

class A:
    def __eq__(self, other):
        return False

    def __hash__(self):
        return 7

class B(A):
    def __eq__(self, other):
        return True

    __hash__ = A.__hash__

issues

PLW1641 Object does not implement `__hash__` method
   |
12 | class B(A):
   |       ^ PLW1641
13 |     def __eq__(self, other):
14 |         return True

even though the docs explicitly recommend this:

If a class that overrides eq() needs to retain the implementation of hash() from a parent class, the interpreter must be told this explicitly by setting __hash__ = <ParentClass>.__hash__.

[charliermarsh]

This is now fixed.