The rationale was here. https://github.com/python/cpython/issues/85067#issuecomment-1093874030 https://github.com/python/cpython/issues/85067#issuecomment-...

The rationale was here. https://github.com/python/cpython/issues/85067#issuecomment-1093874030 https://github.com/python/cpython/issues/85067#issuecomment-... It seems a bit vague: « Exposing this attribute would help with introspection, making it possible to write efficient functions that operate on dict views. »