[3.9] bpo-38908: Fix issue when non runtime_protocol does not raise TypeError (GH-26067) by Fidget-Spinner · Pull Request #26075 · python/cpython

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gvanrossum

@Fidget-Spinner

Wait, @gvanrossum I just realised this is backwards incompatible with previous minor versions of 3.9. If someone previously used it incorrectly it will now throw an error. Should we revert this and keep it 3.10 only? (Sorry for the flip-flop!)

Fidget-Spinner added a commit to Fidget-Spinner/cpython that referenced this pull request

May 12, 2021

@Fidget-Spinner

Alright, just in case you decide to, I already put the revert PR up at #26077. If you decide against it, please don't hesitate to close it.