Message 230408 - Python tracker
My understanding was that if a different patch will be needed, it is not the same issue. Is that not correct?
Here's the test:
def test_iadd(self):
...
self.assertRaises(TypeError, u.__iadd__, None)
It would still pass, as returning NotImplemented will still result in a TypeError, just with a friendlier message.
If any code is depending on this, it is depending on the error message text, which is explicitly not guaranteed