Allow overlapping comparisons between bytes-like types

[hauntsaninja]

No description provided.

[JelleZijlstra]

Thanks for noticing this!

The actual runtime behavior is that bytes returns NotImplemented for anything that's not bytes, but both bytearray and memoryview support comparison with any other buffer. That behavior isn't representable in the type system until we have PEP 688, so what your PR does seems like a step in the right direction.

Would mypy --strict-equality work without special casing if we added def __eq__(self, other: ReadableBuffer) to memoryview and bytearray in typeshed?

[github-actions]

According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉