The following will currently fail with a RecursionError:

class A(bytearray):
    def __buffer__(self, flags):
        return super().__buffer__(flags)

a = A()
mv = memoryview(a)

Thanks to @chilaxan for finding this, along with some related problems. I am working on a fix.

Linked PRs

• gh-104223: Fix issues with inheriting from buffer classes #104227